In a small coastal village in Mexico, the life of María, a young artist with an innate talent for painting, is interrupted by the arrival of a mysterious outsider. This stranger, burdened with secrets and a past full of shadows, awakens unknown feelings in her and a longing to escape her monotonous day-to-day life. As they begin to connect, a series of unfortunate events reveals that his arrival was not a coincidence; he is in search of the legendary "Heart of the Sea," an ancient artifact said to possess the power to change the destiny of those who find it.