It was a time of terror. Rude aliens would gobble each other in the street. Only one man knows how to stop the terror. One clever, friendly man - Phil Olsson. Phil is a 80-year-old mechanic from Newton Abbot with a thirst for glasses. He knows that to stop the rude aliens from continuing their dastardly deeds, he must betray his clever son, Cuthbert Rabbit. He gives up his idyllic life and travels to Plymouth where he attends an important funeral and acquires some grey trousers. However, when Cuthbert calls, begging him to come home, Phil is forced to decide what is more important: stopping the rude aliens that gobble each other, or preserving his relationship with his son?