Something from outer space falls near a small Irish island. Caught in the sea, the bloodthirsty octopus-like aliens first attack the fishing vessel and kill the team.
To replace one of the policemen, the brand new Lisa Nolan arrives on the island and gets acquainted with colleagues and local residents, who, as one, do not mind having a good collar. And soon this sweet habit will save their life, because alien guests who aim to eat the entire population of the island do not tolerate alcohol.