As Keely and Phil admit their true feelings for each other, the time machine is finally fixed. Are the Diffy's going home for good?

When Phil finds out his great-great-grandfather is one of his classmates, his meddling might erase his mother, and also himself and Pim, from existence.

When Phil loses the Wizard, which ends up in the hands of Mr. Hackett, he must figure out a way to get it back with the help of Pim and Keely.

The Diffy's come down with a case of a disease from the future that causes them to act the opposite of how they normally act.

Phil has no idea what to do for Keely's birthday.

Keely second guesses her passion for news after Pim takes over her news show and uses it to trick people into buying items featured on it.

Keely's plan to get two classmates to admit their feelings for each other backfires.

Phil tells Keely about the real first time he met her.

Phil imagines what it would be like if everyone knew he was from the future.

Phil wants his family to respect his privacy and after the floor in his room collapses, he moves into the garage with Curtis but then doesn't want to move back in the house.

Pim wins the contest to be principal for a day and, as expected, abuses her power.

When Keely blurts out the answer to the math question Phil just solved, she gets moved to advanced math class where she doesn't belong.

Phil and Keely babysit Mr. Messerschmitt's nephw.

Phil substitutes Curtis as the field trip chaperone.

Lloyd realizes the time capsule at the kids' school may help them return to the future.

Phil takes a stand against the career placement test.

Keely asks Phil to the dance, but he might be going back home. When he ends up not having to leave, she has already asked somebody else.

Tired of spending all his free time with Keely doing the girly things she used to do with Tia before she moved away, Phil introduces her to the new girl in school, but then feels left out when she never has time for him.

The Diffy's discover that Mr. Hackett has moved in next door.

When Phil and Keely use future tech that tells them how they will do on a test, they don't study properly and get bad grades.

Phil takes Keely on a futurist virtual date to the future with his Virtu-Goggles.

Phil and Pim are forced to spend 24 hours walking in each others shoes.