Josie Jenkins can lift a table, a car, and even a bus with no effort at all. The fame and fortune such incredible powers promise, however, is not what Josie was hoping for from life, and she is happy when the powers suddenly leave her and she can go back to being a carefree schoolgirl.

When his parents disappear on the way back from a Moon vacation, Sam is abducted by evil neighbor Hilda Hardbottom, but manages to hold his own thanks to Splodge, a small alien wayfarer who gives him a shot of invisibility.