David and Siri are a young couple living in London. During a night out, they meet Camille and a flirtatious game arises where the boundaries are gradually dissolved. In an act of drunken curiosity, they have a threesome.
David discovers Siri's infidelity with John and, after confronting her, moves in with his friend Mario. While adjusting to his new life, David meets Joanna and they develop a connection. David grapples with his feelings for Siri and Joanna, culminating in a conversation with Siri about whether he wants to start fresh with her or move on with Joanna.