Pre-series
- 4000 years ago: A Chinese martial artist named Bruce E creates the martial arts called Juuken, moving to Japan where he took on ten apprentices. However, through the actions of an immortal, three of the apprentices killed their mentor and became the founders of the Rinjuuken Akugata, the Kenma. The other seven, the Kensei founded the Gekijuuken Beast Arts school and battled their former friends in the Geki Rin Rebellion. The battle, with one Rinjuuken user among the deceased, ended with the Kensei sealing the Kenma's disembodied souls at the cost of assuming humanoid animal forms.
- December 24, 2006: Karl's loving mother is killed in a traffic accident, causing the boy to despise Christmas. (Lesson 43)
Series
- On a journey to seal the Kenma Bracelets, SCRTC president Miki Masaki's plane is brought down where Rinjuken Akugata warrior Makirika seizes them for his master Rio to begin resurrecting the powerful warriors of the past. However she is protected near her crash site by Jan Kandou, a "tiger boy" living in the wild that she brings to Master Xia Fu to become a member of the Gekirangers. (Lesson 1)
- The Gekirangers defeat Makirika. (Lesson 2)
- The Gekirangers defeat Gyuuya. (Lesson 3)
- Heading out to confirm the Gekiranger's powers for himself, Rio has a "destined encounter" with Jan, sensing him as his great rival. (Lesson 4)
- Rio sends out the Five Venom Fists both to defeat the Gekiranger and to use them to find the power of the "True Poison" required to revive the Rinjuken masters. The Gekirangers defeat Kademu. (Lesson 5-9)
- The Gekirangers defeat Moriya. (Lesson 6)
- The Gekirangers defeat Sorisa. (Lesson 7)
- The Gekirangers defeat Maga. (Lesson 8)
- Mele, Rio's second-in-command, discovers the power of the "True Poison" within Venom Fist leader Braco, whom she defeats and claims the True Poison for her beloved. (Lesson 9)
- The Gekirangers defeat Mechung Fu. (The Movie)
- Ran/Geki Yellow starts training with Master Elehung Gambou. The Gekirangers defeat Muzankose. (Lesson 10, 11)
- Rio revives Kenma Kata and gains the power of hatred to increase his power. (Lesson 11)
- The Gekirangers defeat Nagiu. (Lesson 12)
- Retsu/Geki Blue starts training with Master Bat Li. The Gekirangers defeat Rasuka. (Lesson 13,14)
- The Gekirangers defeat Rutsu. (Lesson 15)
- fearing Kata's influence, Mele tries to revive the Kenma Rageku, who ends up increasing her power as well as pushing Rio further with the power of jealousy. (Lesson 16)
- Jan/Geki Red starts training with Master Sharkie Chan. The Gekirangers defeat Dokariya. (Lesson 17, 18)
- Rio is forced by the Kenma to fight the Gekiranger to destroy Geki Juken; he easily crushes the team, but is prevented from finishing them when discovering from their master Xia Fu that they have the potential to gain the power of "Kageki". He captures the master and gives the team time to train to gain Kageki at the risk of Xia Fu's life. (Lesson 19)
- The Gekiranger Triangle crash course with the Master Triangle in a tourney to prove they can utilize their own weaknesses in hopes of activating their Kageki power. (Lesson 20)
- Facing Rio once again in a pushed-up showdown, the Gekiranger awaken their Kageki power and easily defeat Rio in combat, while gaining the Geki Fire formation embodying the power of the Master Triangle. (Lesson 21)
- Desperate for more power, Rio reawakens final Kenma Maku, but becomes imprisoned for trying to take over Rinjuken as the Land warrior retakes control of the organization. (Lesson 22, 23)
- Former Geki Juken student (and Retsu's older brother) Gou Fukami returns to Japan, but cannot stay around the Gekiranger easily due to being cursed into becoming a wolf-man and the difference in his own "Shigeki" style. Ultimately, Gou realizes his need for the team and joins, becoming Geki Violet. (Lesson 22-25)
- The mysterious Long appears to Mele to help her gain the means to teach Rio the power of "Donrinki", a Rinki ability similar to Kageki such as used by Maku. From her studies and from the discovery of Gou's return, Rio masters the upgrade as planned. (Lesson 23-25)
- The Gekirangers defeat Dorinki Butoka and Dorinki Wagataku. (Lesson 26)
- Genius but lazy Geki Juken student Ken Hisatsu returns to Japan to assist the Gekiranger; though causing chaos by accidentally selling off the Soujuutou sword, the team is able to reclaim it with his help. Rio attempts to go to the Beast Origin Village to become strong enough to stop Maku, but is persuaded to wait after Long secretly warns him against doing it without the Soujuutou to enter. Mele ultimately gains the sword by unfair means from Ken while gaining Donrinki herself. (Lesson 27-30)
- A massive brawl between Geki Juken and Rinjuken forces occurs near the Beast Origin Village sparked by Rio and Mele's approach. The Rinjuken duo and the five Gekiranger reach Beast-Fist God Sai Dain but are sent back in time by Rageku to prevent anyone from gaining its power. (Lesson 31, 32)
- Upon returning to the present, the Gekiranger are forced to fight the Kenma after they seal the Fist Sages with their Wailing Ball. Upon returning to Sai Dain, Ken finally finishes his training, allowing for him to become the beast's rightful owner and awakening the Beast Power Bloom within the seven Juken warriors, giving the team the power to finally stop Kata, then Maku. Rageku is ultimately killed by Long when she realizes who he is and what he wants with Rio. (Lesson 34, 35)
- The Gekiranger encounter the remaining Boukenger of Earth and help them save their teammates Akashi and Sakura after they become forced to work for Cosmic Kenpo Master Pachacamac XII, who tries to obtain his ancestor's power left on Earth. (Gekiranger Vs. Boukenger)
- Long summons his partner Sanyo to offer Rio the chance to rule over their practice of Genjuken as their king, but the lion warrior turns them down. They wear him down slowly both through Mele becoming a Genjuken warrior and by revealing their warrior Suugu as Dan, his former Geki Juken teacher and father of Gekiranger Jan transformed into a Genki-enhanced warrior. Rio succumbs to his desire for power and becomes their Phantom Beast King. (Lesson 36-40)
- Discovering his father as Suugu, Jan has an anxiety breakdown fearing a showdown with his own father. With the guidance of Xia Fu, Jan overcomes this and chooses to defeat Suugu with the memory of his real parents within him. (Lesson 41-42)
- The Gekirangers defeat Shuen. (Lesson 43)
- Jan faces Suugu in a final showdown determined to kill him while believing him as not his father, but succumbs to realizing that Suugu will always be his father no matter what he becomes. Coerced by the sorrowed will of the creature, Jan finally kills him as an act of mercy to save Dan's spirit. (Lesson 44)
- Gou learns the Heaven and Earth Disaster Strike from Master Michelle Peng in a last effort to defeat former teammate Rio, but is crushed in defeat after wasting his move on a Genjuken warrior, exposing it's weakness to the Phantom King. Jan and Rio confront each other in a final showdown using all of their skill and training, which Jan finally wins when he invokes a move that reminds Rio of Dan. With Rio's final defeat, he nearly becomes an unstoppable raging monster, which is the true form of Long's "Phantom Beast King" before he is quelled down by Mele. (Lesson 45)
- Discovering the truth of Long's manipulations, Rio has a complete breakdown as the dragon takes Mele to eliminate his final connection to the world. With Jan's boosting, Rio returns and assists the Gekiranger in appearing to defeat Long and Sanyo. (Lesson 46, 47)
- Rio and Mele partake in "Judgement Fist" to clear all of Rinjuken's sins and reunite the Juken fists, but is interrupted by Long's revival as the Infinity Dragon. Mele sacrifices herself to save Rio out of love, forcing Rio to ultimately sacrifice his life to destroy the powerful form of Long while forcing something into the main triangle of Gekiranger for after it is stopped. (Lesson 48)
- Jan, Ran and Retsu undertake mental training with the Kenma at Rio's command to completely unify the teachings of the 10 Sages once again, as well as giving them the ability to perform the Wailing Ball, which permanently seals Long and allows for Juken students from here on out to prevent him from ever returning. The Gekiranger break up with their mission complete, with Jan deciding to wander the world once again protecting the sealed Long gemstone. (Lesson 49)
Post-series
- 2009: The Gekirangers team up with the Go-Ongers to defeat Long Banki. (Go-Ongers Vs. Gekiranger)
- 2011: The Gekirangers, among the first 34 Super Sentai, oppose an invasion of Earth by the Space Empire Zangyack in what becomes known the Legend War, ending with all Super Sentai sacrificing their power to destroy the invasion fleet. Dispersed throughout the universe, the powers ultimately resurface as Ranger Keys whilst the former Super Sentai disband. (Kaizoku Sentai Gokaiger ep. 1, 199 Hero Great Battle)
- 2012: A month following the defeat of the second Zangyack invasion, the powers of the 34 Super Sentai are returned to them by the Gokaigers. (Gokaiger ep. 51)
- 2012: The Gekirangers, among the first 34 Super Sentai, are apparently defeated by Tsukasa Kadoya (Kamen Rider Decade), Great Leader of Dai-Shocker which seeks to wipe out the Super Sentai, opposing Dai-Zangyack led by Emperor (formerly Captain) Marvelous (Gokai Red) who are hunting the Kamen Riders. In fact, all the presumed deceased Sentai and Riders had been transported to the dimensional rift, from which they emerge to defeat the new Shocker-Zangyack Alliance. (Super Hero Taisen)
- 2013: The Gekirangers participate in the battle against Space Shocker. (Super Hero Taisen Z)
- 2017: The Gekirangers, among the first 38 Super Sentai, provide their power for the Ninningers and Zyuohgers to defeat Gillmarda. (Zyuohger vs. Ninninger)
- 2019: The Gekirangers are embroiled in the Super Sentai Strongest Battle. (Super Sentai Strongest Battle)
- 2021: The Gekirangers, among the first 44 Super Sentai, are embroiled in the Zenkaigers' conflict with the Kikaitopia Dynasty Tojitendo. (Kikai Sentai Zenkaiger)
