A week into the new year, Perry has settled into his new routine at OWCA. But when a coup by Rodney against Doof kicks off a dangerous chain of events, Perry and his allies must band together to fight a new and improved LOVEMUFFIN. Meanwhile, fresh from a breakup, Monty Monogram throws himself into his job as a spy but soon finds himself battling an unexpected love triangle too.

When Stacy Hirano accidentally discovers that Perry the Platypus is a secret agent, her curiosity plunges her into a world of espionage, danger, and hilarity.

Phineas, Ferb, and four pups set out to the planet Feebla-Oot in the Vroblok Cluster to rescue Candace, Ryder, and the other four pups. However, Ryder escapes the Mothership while Candace becomes tempted to stay when she becomes respected by its people, not knowing that they harbor a dark secret which involves her presence.

Phineas Flynn begins to develop a crush... but NOT on Isabella, but rather, on one Stacy Hirano, a girl who's a little older than him. However, as he tries to develop the best present for her to give, how will Stacy react? What of Isabella's feeling for Phineas? And all the while, Ferb is helping Phineas with his plan, if only to flirt with a familiar teenage girl he knows...

Stepbrothers Phineas and Ferb try to make the most of every day of their summer by building a crazy contraption. Their sister, Candace, tries to bust them. Their pet platypus, Perry, must thwart the evil Doctor Doofenshmirtz before he takes over the Tri State Area.

Linda Flynn has never been Ferb's mother, and she never will be.

A bunch of stories about the sexcapades of Phineas Flynn and Isabella Garcia-Shapiro. Can be read as one long story or a series of one-shots.

High school is easier than middle school, right? Well, for genius inventor Phineas Flynn, that couldn't be farther from the truth. When three boys continue to bother him, it's up to Ferb, Isabella, Buford, and Baljeet as well as some new friends to stop the three bullies from ridding Phineas Flynn of his smile forever. Rewrite of my old story from 2020, now with less cringe!

Ferb has been acting strange as of late, seemingly ignoring Phineas and the rest of his family, feeling detached, Isabella helps Phineas find the solution, and it isn't what they were expecting. But little do they realise, this was only the start of a much grander and perilous adventure that will test everything they have.

Lite ömhet, en hel del smärta. (One-shot.)

A little bit of tenderness, a whole lot of pain. (One-shot.)

Stacy Hirano didn't visit the Danville Public Library frequently–well, the nonfiction, actual book section of the library anyway–but today she was on a mission. Well, again, not a literal mission, but she did have a secret agent with her. (Written for the AO3 15th Anniversary Prompt Challenge - Day 1: Learning a Language Together) One Shot. Originally posted on AO3.

It's the last day of summer, and Jeremy Johnson has woken with a very peculiar feeling. Something is missing. Something important. He has to find out what.

a remake of an idea I tried a few years back but ended badly last time

Amenazas que se vuelven reales y que cambiarán la historia para siempre

The story starts when it was hot and it was summer. Isabella likes Phineas and is best friends with Ferb. It's senior year of high school and Isabella has a plan to get Phineas to FINALLY notice her. Will her efforts remain unnoticed by Phineas? And what about Ferb? AN: The story starts Phinabella, stay tuned it will end Ferbella.

¿Cómo se inició el reino de los Doofenshmirtz? ¿Cómo y por qué Phineas Flynn traicionó a los suyos y terminó uniéndose a ellos?¿Qué pasó en la dimensión durante el año siguiente? La joven Vanessa, nueva agente de la O.S.B.A. de la segunda dimensión tiene la respuesta en sus manos. *Se recomienda leer antes el FIC El primer día del verano.

**STORY UNDER MAJOR RE-CONSTRUCTION** When Ferb bumps into Gretchen, the two slowly slip into a stupor during a number of shenanigans as they try to understand the most complex thing ever: their attraction to each other. **Songs included.**

Phineas and Ferb get wind of a skilled knockout zooathlon, beginning in the coming days and find it totally interesting. Only one problem - Humans can't enter. To tackle that, they turn to Perry the Platypus, but how will he fight the competing evil without blowing his cover or getting disqualified?

Perry the Platypus, OWCA's top agent, has always been a lone wolf, avoiding cooperative work and the other agents whenever possible. Penny, his little sister, doesn't feel confident being alone in the field and desperately wants a partner. What would happen if the two siblings got paired together one day? First in the All We Know series. (Features OCs) (IN PROGRESS AS OF JUNE 2024)

In this funny story, somehow Doofenshmirtz gets bitten by a vampire bat and he plans to turn the entire Tri-State- Area into his own vampire army! With his nemesis, Perry the Platypus(or Agent P.) and his own daughter, Vanessa, as his first victims.

Baljeet seeks out someone to kiss at midnight on New Year's Eve. It doesn't go according to plan.

Doffenshmirthz finds out the true reason baking soda volcanos where beating him

A normal day for Phineas turned upside down as his world falls apart. His parents are sent to jail. Ferb moves to England. Stacy takes Candace in, and Perry is relocated leaving Phineas alone; left to pick up the pieces of what he thought he knew as life. Thankfully, his best friend and her pink bow is there to walk through this new life with him. T for language. Phinabella

Someone leaks information about The O.W.C.A to the following Agents families Perry the platypus,Peter the panda, Pinky the chihuahua, Darren the duck, and Sergei the snail.