In the rain-cursed kingdom of Vialla—where the sun hasn’t shone in 100 years—Princess Opalette is chosen to perform in the ancient Festival of Tides, a ritual said to decide the fate of the realm. Ballad of tides follows Opalette, a sheltered princess raised under an eternally gray sky. The kingdom believes the festival, held once every hundred years, can restore balance and bring back the lost sunlight. But as the ritual approaches, Opalette struggles under her father’s emotional demands and the expectations placed upon her.