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.

It's the morning after their shared moment in the bathroom the night before. Gemma, Ray and Kieran try to pretend that nothing happened. Gemma opens up the café as usual, but is shocked when her estranged father shows up to interrogate her about her life choices. Ray takes an underwater modelling gig with Moi, but suffers a panic attack in the tank, and must be pulled out. Exhausted from back-to-back night shifts and the previous late night, Kieran gets involved in a serious incident at work. As Gemma's world falls apart around her, Ray comes to the rescue, bringing her landlords closer together in a time of crisis.

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.