One day, John, recently abandoned by his girlfriend, meets his next-door neighbours, Anne and Kim, two beautiful women who invite him into their flat. The apartment is full of canned goods and jugs of water, as if they were expecting some sort of a siege. John is surprised that he has never met them before, while both women seem to know him and his ex-girlfriend, Ingrid, intimately. The women’s sexual and manipulative behaviour makes John uncomfortable and he leaves in anger, but Anne manages to convince him to come back and keep an eye on Kim while she goes shopping. She tells John that the man who lived in John’s flat before had assaulted Kim and kept her prisoner for two days. Since then Kim has not dared leave the building.

When John returns to the women’s flat, Kim denies everything Anne has said and claims that it was Anne who had been assaulted. She tries to seduce him and lures him deeper and deeper into their gigantic flat. John begins more and more to lose control over his life, crossing boundaries he never thought himself capable of.