When scientist Dr. Simon invents a genetic transformation machine, evil business men scheme to steal his billion dollar idea. But before they get the chance, Dr. Simon’s two-year-old grandson accidentally turns his body into a thirty-year-old man and runs off. Now his siblings must catch him and figure out how to change him back before their parents get home – and before the bad guys get to him first.

Left home alone with his dog Harry, young Ray finds himself in a bit of trouble when Harry gets loose in the suspicious neighbor's house and accidentally knocks over a top-secret invisibility potion! Now, with crooks and the FBI on his tail, Ray needs to find his invisible mischievous mutt before they do - and get Harry back before his parents get home!

The film is based on a story by Corbijn and Bono, and includes several of the characters Bono created for the album. The plot focuses on a Parisian motorcycle officer, played by Saïd Taghmaoui; the character has become disillusioned with his life and the conflict between immigrants and the police in the city, causing him to leave to see his girlfriend in Tripoli.