Bug Exterminator, Rigby Pinkerton, is one of the biggest losers in the world. His ex-wife left him penny-less and now he's stuck at home living with his plastic surgery obsessed Mom. His life suddenly gets more complicated when he unwillingly gets caught in an intergalactic war that literally crash lands into his backyard. He's the only one that can stop a deadly alien swarm and help a lone alien hero save the universe. Too bad Rigby has better things to do... like fawning over the hot new single mother that moved in next door.