In 1988, Derek Mayfield should be celebrating the best year of his life.

After years of struggling with his weight, his self-confidence, and his sexuality, the 26-year-old Black gay man has finally begun embracing the person he was meant to be. Then he receives devastating news: he is HIV positive.

Searching for an escape from fear, uncertainty, and the growing AIDS crisis, Derek travels to Cancun, Mexico, for what he hopes will be a brief vacation. Instead, he finds something unexpected.

Rob and Skeeter Velarde are two straight, white teenage brothers spending the summer with their mother in paradise. To them, Derek is everything they admire — cool, athletic, adventurous, and wise beyond his years. Before long, the three become inseparable, spending their days exploring beaches, sailing tropical waters, telling stories, playing sports, and chasing adventure beneath the Mexican sun.

For Derek, it feels like a second chance at the carefree youth he never had.

But friendships built on admiration and innocence can only survive so long without the truth. As Derek grows closer to the family, he must reveal the secrets he has been carrying: that he is gay, that he is living with HIV, and that his feelings for Rob have become far more complicated than friendship.

When the truth finally emerges, all four lives are changed forever.