The peace of the Erin Island community is shattered by an invasion of giant squid-like creatures known as “grabbers”, who start picking off the villagers. It turns out that the only way to avoid being attacked is by being drunk. Ruggedly handsome but washed-up local policeman O’Shea is forced to sober up for the first time in a long time in order to take command of the situation, while uptight, teetotal policewoman Lisa, who has been reluctantly assigned to partner him, must get smashed along with everyone else in order to protect the island from tentacled, fang-jawed, barb-tongued amphibians.