Gemma and Keiran, a cash-strapped couple in their 30s, take a look at their finances and come to the conclusion that taking in a lodger would ease their financial worries. They open up their home to Ray, a world-class synchronised swimmer, whose presence makes shared living a joy. The close proximity of the trio stirs emotion and romance in all of them, who each embark on a journey of compassion, adventure and caution as they discover new perspectives on relationships as parts of an unusual but inevitable love triangle.