Reid Watsford has a lot of secrets and a past he can't quite escape. While staying at his grandmother's condo in Key Largo, he signs up for introductory dive classes, where he meets Joaquim Oliveira, a Brazilian dive instructor with wanderlust. Driven by an instant, magnetic pull, what could have been just a hookup quickly deepens. As their relationship evolves, they must learn to navigate the challenges of Reid's mental illness—on their own and with each other.