The weirdest alien of the galaxy pays a visit to Earth... Jerry Lewis is Kreton, a childish alien who, against his teacher's will leaves his planet to visit the Earth, and lands in the backyard of a famous television journalist who doesn't believe in UFOs and aliens. Wanting to study humans but not able to fully understand them, Kreton makes a mess out of it, generating a lot of comic situations.
Two broke buddies feel lucky when they come upon a truckload of cellular phones and begin selling them out of the back of their van. Trouble arises though, when the phones develop faults. The two friends then not only have to deal with unsatisfied customers but also the FBI.