Five extraterrestrials go on a picnic together in space. However, their spaceship crashes into an asteroid, and they fall to planet Earth. They realize that if any human finds out that they are aliens, they could be captured and experimented on by scientists, so they take shelter in the attic of a house that is up for rent. The aliens have two goals: return to their home planet, and chase away anybody who tries to establish themselves in the house. (wikipedia.org)