The heroes of the anime series "Yakusoku no Neverland" are ordinary orphans Norman, Emma, and Ray from the Grace Field orphanage. They have been friends since early childhood and dream together of finding new families. One day, there is joy in the house as one of their fellow orphans is adopted. However, it turns out that the girl has forgotten her beloved toy. The trio rushes after their friend to return it, but instead accidentally discovers a horrifying truth. There is no bright future beyond the confines of the orphanage. The children are faced with two choices: escape or die.