Trigonometry

Accomplished chef, Gemma, and her paramedic boyfriend, Kieran, live together in West London, above Gemma's café. Kieran and Gemma are madly in love. But unfortunately, love alone can't pay café suppliers, or London rent. The pair are barely making ends meet, and their different shift patterns mean they're like ships in the night. To ease some financial pressure, they've decided to take in a lodger. Enter Ray, a former world-class synchronised swimmer, whose arrival with a Volvo full of baggage commences a modern-day love story that will change the trio's lives - and how they view relationships - forever.

Gemma, Kieran and Ray try to avoid each other but fate throws them back together.

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. Ray helps Kieran in his physical recovery and he inspires her to get back in the water. Meanwhile, Gemma finds that two hands are better than one when Ray helps out in an increasingly busy Ampersand Café. The trio have never been happier together. 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 heartfelt declaration the night before. Kieran lashes out as he struggles to come to terms with his feelings. Ray tries in vain to be invisible, but Gemma's friends recruit her in dressing the bride. However bad the timing is, both Gemma and Kieran are drawn to Ray. Following a beautiful ceremony filled with love, family and friends, the trio find themselves on the cusp of an unthinkable decision, and an uncertain future - but will Ray stay, or go?

The day after the wedding. 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. Dejected and confused, Ray reconnects with Moi, with calamitous consequences. In Finland, Kieran and Gemma can't stop thinking about what they've left behind and what this means for them as husband and wife. In London, Ray starts a new job and thrives on being part of a team again, but would she have space in her new life for a returning Gemma and Kieran?

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.

Gemma realises that she's run out of options to save the café. When Ray's solution highlights an inequality in the triad's relationship, the three of them decide to come out to their friends and family. The ripple effects on everyone's lives are far-reaching - sometimes for the better and sometimes for worse. Reactions from friends and family ultimately encourage the triad to come to a big decision which will seal their future together.

The triad's unity is challenged by a sudden tragedy. Gemma rushes to her childhood home while Ray and Kieran look after Danny. Kieran suffers a panic attack which calls his future as a paramedic into question. Ray, Kieran and Danny join Gemma, but a misunderstanding leads to a showdown. Gemma and Kieran face a possibility that they never dreamed of, and Ray makes a decision.