Candace is split into two personalities: one who wants to bust the boys and the other who wants to be with Jeremy; Phineas, Ferb and their friends get sick.
Candace switches places for a day with a princess that shares her likeness, but Phineas and Ferb's continued hijinks prevent her from enjoying the spoils.
The Proud family packs their bags and goes to Hawaii on "Lilo & Stitch"; Suga Mamma activates Experiment 397 to impress Mr. Cooper which causes fights.
Della, Dewey and Huey require the help of a brazen pilot to visit an island of monsters to investigate a mystery, but Don Karnage remains in close pursuit.
Hop Pop gives the kids a potion to make the kids behave, but it goes horribly wrong; Anne is bestowed with the prized "Frog of the Year" award & plans a party.
Bill and Chip Whistler strike up a friendship as the Green family attends Farm Con; Cricket becomes $100 richer and is convinced to use it for an investment.
Young Bill is determined to ensure the family farm remains in business; Tilly and Nancy try to sit next to an important person at Saxon's birthday party.
Tilly accepts an opportunity to test new technology at BigTech; Cricket is forced to choose whether he should bring Tilly or Remy with him to attend a show.
When Mabel makes the decision to put on a sock puppet rock opera in order to try and impress a local puppeteer, the entire production is thrown into turmoil.
The kids get help from Old Man McGucket to try to uncover the truth behind a secret society existing within Gravity Falls and the people that comprise it.
Mabel continues to search for her true soul mate in her matchmaking attempts, but she takes things too far when she steals a love potion from a Love God.
Zoé hates injustice, and unfortunately, all she can do is watch. One night, she unlocks a new power that allows her to deliver justice onto the culprits.
OWCA and LOVEMUFFIN square off in a soccer match; Doof attempts to give his own personality to his brother Roger, but his inator hits lots of different people.
The boys look for their mother's wedding ring while Vanessa and Doof go to Drusselstein; the kids build a bird mansion while Doof deals with giant mantises.
Luz observes a part of the Hexide School she had not come to expect after Gus helps her sneak inside for a presentation at the Human Appreciation Society.
The boys want to wash the house, so they create a device that spins it, but Candace gets so dizzy that she faints and awakes in a strange, faraway land.
A research station is in jeopardy, so the team ventures into space to protect it; Hamster takes on an undercover mission to thwart a criminal organization.
Gretel wants to hang out with the cool kids but has to protect them from a disgraced mascot; Kevin and Anthony's friendship is threatened by a prank show.
The twins go on an adventurous mission in Gravity Falls when they try to prove to everyone that the legendary sea monster lives at the bottom of their lake.
Barry's brother skips class, so Kiff and Barry try to discover where he goes; Kiff and Barry want to help the citizens of Table Town through their summer jobs.
Helen is the only person able to help when Kiff unleashes five forces of chaos; Kiff has a difficult talk with Barry about finishing Martin's orange juice.
Dipper's plan to act older than his age to impress Wendy takes a wrong turn when a group of teenagers invite him to a scary, abandoned convenience store.
Experiment 251 uses a sticky substance to link together people who don't get along, forcing them to cooperate in order to capture him and free themselves.