The one that started it all! Allen Strange stows away on a ship from his planet and winds up stranded on our planet. Good thing Robbie and Josh are around!

To enroll in school you need a parent--even if you're an alien--so Allen uses his powers to cough one up. Meanwhile, Robbie's having school troubles of her own....

Is it safe for Allen to go places on his own? Robbie doesn't think so. She goes to look after him and ends up putting herself in danger!

The Stevensons discover that Allen isn't the only intergalactic visitor to drop by Planet Earth... and the new alien on the block isn't very friendly.

The common cold is just a hassle for humans. But for Allen, who's never had it before, it could be fatal. Meanwhile, Robbie tries out for the varsity track team.

As a new member of the wrestling team, Allen must decide whether or not to use his super strength. Can he do it without blowing his cover?

When Josh and Ken go camping and Robbie goes to visit Gail, Allen's left alone for the weekend. Well, not ALL alone--there's a burglar in the house!

A deadly meteor is heading straight for Earth, and only Allen can stop it. Meanwhile, Josh and Robbie's slumber party pals are on a collision course.

Allen and Josh make a computer that falls in love with Robbie, and there's nothing worse than a lovesick laptop.

Josh and Allen discover a clue that could help Allen get back home. Unfortunately, it's right in the middle of an evil Trykloid lair.

Allen really, really wants to get back home. He sends out a signal to his home planet, but Shaw and Phil Berg track the message.

Before Phil Berg can capture Allen, the Trykloids capture Phil. But the A.R.C. has better luck, and now Allen is behind bars with only one hope of escape.