Winter, a mischievous and self-centered daughter of Morpheus, the god of dreams, is punished for her bad behavior of giving nightmares to random people just for fun. In order for her to recover her full powers back and to correct her wrongdoings, she must complete a special quest where she needs to introduce and show colors for the first time to her blind since birth neighbor, Karina in her sleep through her dreams.

Sana is the last person Tzuyu loves.