Men in Black 3

The movie opens with the escape of a strange and powerful alien named Boris the Animal. He is the last survivor of the Bogloddite alien race, which survives by attacking, seizing and occupying other inhabited planets. Boris is a killer, who was captured by Agent K and imprisoned in a secret prison on the Moon. K also managed to deploy a defense system (called “Arca Net”) and prevent a Bogloddite invasion, thus achieving their extinction. However, Boris manages to slip past security and destroy much of the prison in order to escape and take revenge on K.