Due to the combination of a magic spell and a mysterious Mayan amulet, a rip opens in the space-time continuum, allowing various versions of Phineas, Ferb and their allies to meet each other. Unfortunately, the 3 versions of Doofenshmirtz also meet and plan to use the rip in time to conquer all of time and space! It'll take triple the Phineas and triple the Ferb to save all time itself, and close the vortex before time is destroyed for good, while the multiple Candaces plan a time-spanning bust.
The story was originally simply "Time Travails," but in 2017, the author reworked it, changing certain details they didn't like, and making more closer references to the original episodes. As a result, the original version no longer exists.
This story contains examples of:
- Arranged Marriage: Chinese!Phineas and Princess Isabella have one of these, but only when they're old enough.
- Big Bad Duumvirate: The three different versions of Doofenshmirtz are working together to conquer all time, although Malifishmertz is the de facto leader.
- Bound and Gagged: Princess & 1914!Isabella, as well as all 3 Candaces at some point.
- Continuity Nod: The story features a number of references to the various "time-shifted" episodes these characters come from.
- Damsel in Distress: 1914!Isabella, although justified in that she's letting herself get captured because she likes Ohio rescuing her. Princess Isabella becomes this too, as do the three Candaces.
- Fainting: Princess Isabella does the Emotional version after she is rescued by another Phineas.
- Hostage for MacGuffin: 1914!Doofenshmirtz kidnaps 1914!Isabella to make Ohio Flynn & Rhode Island Fletcher hand over the Mayan amulet they just retrieved. In fact, Doof finds this method to be quite effective, as it saves him the trouble of having to go through dangerous traps to get it himself.
- Insult Backfire: After 1914!Isabella calls him several things, 1914!Doofenshmirtz replies that he didn't think she liked him.
- In Their Own Image: Doofus Khan suggests going back to caveman times and taking over the world before civilization starts so the Doofenshmirtzes will already rule in the future.
- It Will Never Catch On: Both Chinese!Buford & Candace feel this way about the Great Wall of China.
- MacGuffin: The unnamed Mayan amulet.
- Minion with an F in Evil: 1914!Norm, like his mainstream counterpart, who rarely is of any use to his master, which is why he heavily favors the Lawn Gnorm.
- Mistreatment-Induced Betrayal: 1914!Norm leads the heroes to the captive Candaces, due to his boss rejecting him in favor of Malifishmertz's Lawn Gnorm. 1914!Doofenshmirtz even lampshades this.
- Never the Selves Shall Meet: Averted, the various versions of the characters interact with each other freely and without incident. The Chinese version of Phineas actually brings up this trope, but is told that the rules have changed due to the time-space continuum being out of whack.
- No Ontological Inertia: When the amulet is destroyed, everyone is sent back to their original times.
- Official Couple: Chinese!Phineas and Princess Isabella.
- Real After All: For the purposes of this story, it's revealed that the events of "Excaliferb!" actually happened, and were documented by that world's version of Carl, but that, over time, they were forgotten and treated as a mere fantasy story.
- Rescue Romance: Invoked by 1914!Isabella, who keeps allowing her Doof to kidnap her in hopes of starting one of these.
- Rule of Three: All the major Phineas & Ferb characters have three counterparts that appear in the story.
- Shout-Out: In keeping with the Indiana Jones homage, the 1914!Doofenshmirtz delivers his own version of Belloq's famous "there is nothing you posses..." speech.
- Strange Minds Think Alike: After ditching the fezes (because they're not in Egypt) 1914!Monogram & Carl switch over to Panama hats, to which Carl replies "I think they're just called 'hats' here." Later, after 1914!Doofenshmirtz comments on Perry's Panama hat, Norm says the same thing.
- Tempting Fate: Malifishmertz decides to try a new spell he's never used before and is quite dangerous, but figures he's experienced enough to handle it, even asking "what could go wrong?"