On her 64th birthday, Zoe, a lonely, widowed Cuban exile, is about to become a grandmother. She is also about to receive an unexpected visit. After more than forty years without seeing each other, Helena, her childhood best friend, returns to catch up and explore their lives through songs, letters, and memories from their past. Without imagining that this reunion will change their lives forever, when a secret comes to light, they both have to reconsider their relationship.