NiGHTS: Hoshi Furu Yoru no Monogatari is based on the classic Sega video game series NiGHTS. The story revolves around dream worlds and the mystical being NiGHTS, who helps children navigate their dreams and overcome nightmares. The series is known for its surreal visuals and imaginative storytelling, capturing the essence of the original game while expanding its universe through new characters and adventures.