Trigonometry

Trigonometry is a love story about three people who are made for each other. In crowded and expensive London, cash-strapped couple Gemm and Kieran open their small apartment to a third person. Somehow, their new addition, Ray, makes the flat seem bigger, not smaller. Gradually, many things become easier, nicer and better with an extra pair of hands.

Everyone is confused after their shared moment the night before. At work, Gemma gets a visit from her dad, Ray has a panic attack, and something goes wrong on Kieran’s shift.

Gemma and Kieran set a date for their wedding. Ray helps Kieran's recovery and he inspires her to get back in the water. Ray helps Gemma in the cafe. As the wedding nears Ray wonders where she fits in.

Following Ray’s declaration the night before, Gemma and Kieran go ahead with their wedding day. Will the tension between the three come to a head in front of friends and family?

The day after the wedding. Gemma and Kieran are due to go on their romantic honeymoon in Finland and Ray starts a new job.

Ray’s mum, Mathilde, visits London for Ray’s birthday. It’s been a year since Ray left home and Mathilde tries to navigate the distance growing between her and her only child. Over a tense birthday dinner, Mathilde observes a new dynamic between Ray and her landlords.

The café is under threat and Ray thinks she has the solution, but Gemma and Kieran aren’t sure. The triad come out to their friends and family, sparking some surprising reactions.

The triad have never been happier, but a family tragedy throws everything up in the air. Gemma faces a possibility that she never dreamed of, and Ray makes a decision.