After the suicide of his best friend and the fire of a local dance called Cromañón, including recitals, illegal parties in an abandoned warehouse and high school, a year passes by in the life of Zabo who writes everything he feels and lives in his blog, "Memories of a teenager".
Ezequiel, a sixteen-year-old gay teenager in his sexual awakening, meets a boy of twenty-one. They quickly start a relationship and the situation unravels unexpectedly.
Four young Cuban artists choose to stay in Cuba during what has now become the island's largest migration crisis. The One Who Stay is an intimate portrait of those who stay behind, lose loved ones, and shape the identity of a generation at risk of fading away.