Lunchbox is your average basset hound: round, floppy, and not too bright...until he's abducted by aliens.  Then he suddenly becomes a lean, mean, garbage-machine-making, uh, machine.

Frazz and Grunfloz, the hapless aliens that abducted Lunchbox, have set him the task of converting Earth's trash into froonga, a food adored by aliens and dogs alike.

Will Lunchbox and his boy, Nate, solve the world's garbage crisis and form the first interplanetary alliance?  Or will the fate of the whole solar system come to rest on whether Lunchbox can ever learn to catch a Frisbee?