Majora’s Mask

After saving Hyrule, Link journeys through an uncharted part of the Lost Woods in search of a dear friend. While traveling through the woods, the Ocarina of Time is stolen by a Skull Kid who is wearing a mysterious mask. Upon confronting the Skull Kid, Link is cursed to take the shape of a Deku Scrub.

Shortly after, Link arrives in Clock Town and meets the Happy Mask Salesman. The Happy Mask Salesman informs Link that the Skull Kid has stolen the evil Majora’s Mask. If Link can take the mask back from the Skull Kid, the Happy Mask Salesman will return Link to his original form. But there’s a catch: the Happy Mask Salesman must leave Clock Town in three days.

And the moon seems much closer and more ominous than usual…

Majora’s Mask on Zelda Wiki