Marcus works in retail while trying to develop a career as a photographer. Effie is studying dance at university in Dublin. From the moment they meet, they feel an immediate, undeniable connection. But, as Marcus soon learns, Effie is in a relationship with Marcus' friend Samuel. It's a boundary that Marcus is unwilling to cross. A shared project, photographing and documenting Black creatives in London, draws them into each other's orbit, but can their burgeoning friendship resist the pull of desire?

They seem destined for each other, their crush evolving into a love that is ocean-deep. But love is never enough, and their path towards one another is treacherous. Will they sink or swim in open water?