- Written by Riku SanjoDirected by Takayuki Shibasaki
Rinna and Genpachiro manages to cut the building's power source, allowing Shinnosuke and the executives to get in. Despite Chase's death, Gold Drive still survives the kamikaze attempt, prompting Mach to fight him again. Having finally acknowledges Chase as his friend, he used the Signal Chaser Bike to become Kamen Rider Chaser Mach and seemingly defeated Gold Drive, destroying the hijacked body of 006. Kiriko reunites with Go and delighted over his victory but her happiness cut short after discovering Chase's death.
After Drive, Heart and Medic defeated the remaining three Reaper Legionnaires, Medic tried to save their Cores but they instead exploded and soon realized that she had lost this ability ever since she woke up, hinting it as Banno's final trap. Shinnosuke receives a call from Kiriko of Gold Drive's death. As the last two Roidmudes mourn of Chase's demise, the second Global Freeze has taken action, but as they tried to advance, Medic was forced to be left behind after she suddenly weakened not even a second after she re-assumed her Super Evolved form. Meanwhile, Banno appears to have survived in his Driver despite Gold Drive's defeat but before his mind can be transferred again, Go kills him with the Shingou-Ax. Once done, Go gives Kiriko Shift Dead Heat and orders her to get to Shinnosuke.
Reaching the Sigma Circular, Drive and Heart arrived too late as Sigma finally evolves and attacks the pair with blistering speed and great power. At the same time, victims of Heavy Acceleration are slowly digitizing from Sigma's power. As the machine utilizes the power of all four Super Evolved Core Driviars, Heart and Drive plan a simultaneous attack but failed. A weakened Medic appears and her body disintegrates but in her final moments, Medic's Core assumes the form of the goddess she was from the first Global Freeze, healing Shinnosuke before evaporating into nothingness. In rage, Shinnosuke transforms into Type Tridoron and stood up to continue the battle to end Banno's madness.
- All Your Powers Combined: The Sigma Circular proves more than a match for Drive Type Tridoron and Ultimate Heart, as it is powered by the powers of four Ultimate Evolutions.
- Likewise Kamen Rider Chaser Mach, which combines the strengths of both Mach and Chaser into
a form comparable to Drive Type Tridoron.
- Likewise Kamen Rider Chaser Mach, which combines the strengths of both Mach and Chaser into
- Big Damn Heroes: The Viral Cores come out of nowhere to power Chaser Mach up and make him immune to Gold Drive's Slowdown.
- Continuity Nod: Just as in Surprise Future, the Shingou-Ax destroys a Drive Driver.
- 11th-Hour Superpower: Mach becoming Chaser Mach.
- Heroic Second Wind: Mach manages to last long enough to defeat Banno as Gold Drive after becoming Chaser Mach and the episode ends with Shinnosuke being revived with a white glow that visually evokes this.
- Hoist by His Own Petard: If Banno could only have left off his Evil Gloating until his data was successfully uploaded, Gou wouldn't have realised he was still alive.
- Last of His Kind: Heart is now the last surviving Roidmude.
- List of Transgressions: Gou reads one off to Banno, all of which he considers unforgivable with killing Chase being at the very top.
- Redemption Equals Death: Medic finally regains her original "angel in white" form and heals Shinnosuke, but dies shortly after because of her wounds.
- Roaring Rampage of Revenge: Half the episode is Gou going on one of these to avenge Chase, ending it by killing Banno.
- Single-Stroke Battle: Mach and Gold Drive's fight ends with a Rider Kick version of this trope.
- This Is Unforgivable!: Gou tells this to Banno, stating a List of Transgressions with killing Chase at the top.
- Villainous Plan Inertia: Even though Banno is dead, Sigma still awakens and intends to carry out his goal. What's more, it's now even worse as Sigma's purpose was to clear away the world so that Banno could reshape it as he saw fit, and with him gone, it meant that Sigma would bring about The End of the World as We Know It.
- Villains Want Mercy: Once he realizes Gou fully intends to execute him, Banno breaks down and begs Gou not to kill him. Gou doesn't listen.
- Wham Line: In-universe example. Shinnosuke, Heart and Medic are stunned to learn that Chase has fallen in battle.
- The Roidmude Count: 1, HeartThe Answer: To defeat Banno for good and save the world from the second Global Freeze.
