All throughout the world hide Yo-kai, spirits of all shapes and dispositions that go unseen by most human eyes. Nate Adams is a young boy who can not only see Yo-kai, but he befriends them as well! Using a device called the Yo-kai Watch, he befriends the many spirits he encounters while also calling on them to help-out in fights against the more…feisty spirits. One day, however, Nate wake up to find that things have changed. He is missing not only his trusty Yo-kai Watch, but his memories of his friends and his adventures with the Yo-kai as well.