During a night out, David and Siri meet Camille. A flirtatious game begins where the boundaries are gradually dissolved. In an act of submission of the moment and drunken curiosity, they have a threesome.

Siri wakes up and discovers David asleep wrapped around Camille's body. She wakes him up, and like thieves in the night, they sneak out together without saying goodbye. Has something changed between them now?

David is in Sweden, and with Siri left alone in London, her anxiety over the threesome becomes overwhelming. She does her best to handle it and goes out partying with Miriam and Josephine.

Siri and her friends from the university celebrate their half-term exam. Siri tries to get further and further away from David and in the heat of the moment she meets John. Immediate attraction arises.

Siri and David's relationship is breaking down and after a big quarrel, Siri runs away from home. In the heat of the moment, she contacts John and now she is suddenly at his home.

Siri and John have created a parallel universe for themselves. A universe where Siri feels she can be herself in a way she cannot with David.

Siri and David celebrate their seventh anniversary and check-in at a luxury hotel. She can not stop thinking about John while David tries to get close. Siri reveals her feelings.

Siri has ended things with John. Camille invites Siri and David to a party, after which Siri persuades David to come with her, not knowing that John will be at the same party.

David has just found out that Siri has been cheating on him with John but doesn't know how to bring it up with her. Instead, he decides to meet up with John and find out what happened from him.

David confronts Siri and demands answers from her about his infidelity with John. Siri tells him everything and David decides to move in with Mario.

David is back at work and finds out that Siri has been there looking for him. Mario takes David on an after work that turns into a drunken night out that ends with his colleague Emma accompanying him home.

David and Siri meet. Siri explains her motivations for her actions, but David is not yet ready to forgive. Later, David and Mario head to an arcade where they indulge in drinks and games, leading David to unexpectedly end up at Siri's place.

David wakes up at Siri's house, and she asks him to visit the emergency room to get his cut looked at. While waiting to get it checked, he has an unexpected encounter.

David tries to distance himself from Siri. He grows closer to Mario and Joanna, but Siri unexpectedly shows up in his life once again.

David's encounter with Siri makes him realise that he is at a crossroads and must choose between his new and old life.

David goes home with Siri after meeting their old gang. Siri wants answers, and David realises that he must make a decision about the path ahead.