Traveling Library

When Finn is saved from the Time Rangers by an older version of himself, it comes with a catch. Old Man Finn needs Finn and his friends, Lincoln and Julep, to help him win battles he lost years ago against the Paradox, a terrible creatures obsessed with revenge against Finn's father. If they succeed, he promises to tell Finn where his father is. He even gives them a pair of time-traveling pajamas to help them with their quest. There's only one problem. The pajamas malfunction almost immediately.

On his 12th birthday, Al Chaudhury receives a letter from his dead father. It directs him to the bunker of their old house, where Al finds a time machine (an ancient computer and a tin bucket). The letter also outlines a mission: travel back to 1984 and prevent the go-kart accident that will eventually take his father's life. But as Al soon discovers, whizzing back 30 years requires not only imagination and courage, but also lying to your mom, stealing a moped, and setting your school on fire - oh, and keeping your pet hamster safe.