A young couple rents a holiday home on a sunny Italian island. What they find, however, does not meet their expectations. Turns out the garden pool is broken. Anna and Adam, despite the fact that the island is struggling with a lack of water, hire a worker to repair the pool for them. The constant presence of a stranger violates their sense of security and starts a chain of events that triggers irrational instincts in them and leads to the darkest point in their relationship.