Naota's life is far from easy. He resides with his eccentric father and grandfather in a city defined by a massive factory shaped like a hand-iron, situated on a hill. His brother's ex-girlfriend makes advances toward him. To make matters worse, a mischievous, playful alien has run him over with her Vespa and struck him on the head with a bass guitar! He has no idea that this is merely the start of his entanglement in an interplanetary ideological war.