The Finniverse Series

Finn Foley has a lunchbox, and when he opens it, weird things come out...like a seven-foot-tall robot and a strange, blinking device that glues itself to his chest. The lunchbox also opens wormholes - shortcuts through space - that take Finn to the farthest corners of the galaxy. Sounds awesome, right?

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.

After his adventures through time, Finn returns home to a world he doesn’t recognize. Changing the past has created an all-new present, one in which he and his friends never vanquished the Plague. Now the giant bugs rule Earth from their spaceship! What’s an intergalactic traveler to do? The answer is obvious. Finn, Lincoln and Julep must defeat the Plague. Again.