On a passenger plane carrying the most dangerous predatory fish - Piranha. Its aquarium set tied steel chains which keep it from destruction of the aircraft. But someone made a mistake and not fully fixed circuit that allowed the monster to get out. After destroying the plane, the monster in the air tends to regale little people, eat as much as possible to the fish grew up and was able to eat larger objects. Do not stay long in the land - it would ruin a predator, just at a time, do all the tasks set before you.