Talented chef Gemma and her paramedic boyfriend Kieran decide to take in a lodger. Enters Ray, a former synchronized swimmer whose arrival commences a modern-day love story that will change the trio's life and how they view relationships.

Gemma, Ray and Kieran try to pretend that nothing happened in the bathroom the night before. Gemma has an uncomfortable conversation with her estranged father. Ray suffers a panic attack. Kieran gets involved in a serious incident at work.

Gemma and Kieran set a date for their wedding and our trio find a rhythm of living together and making each other's lives better. But as Kieran and Gemma's wedding draws closer, Ray begins to wonder where she fits in.

It's the day of Gemma and Kieran's wedding, but they're still reeling from Ray's declaration the night before. Following a beautiful ceremony, the trio find themselves on the cusp of an unthinkable decision and an uncertain future.

Gemma and Kieran miss their cab to the airport, but Ray drives them so that the couple don't miss their flight to go on honeymoon. In Finland, Kieran and Gemma can't stop thinking about what they've left behind and what this means for them.

Ray's mum, Mathilde, visits London for Ray's birthday. Over a tense birthday dinner, Mathilde observes a new dynamic between Ray and her landlords.