The film starts at Vien Forest where a Area Ranger name Janet meets a wild boy name Thomas. Janet takes Thomas to Vientown and Thomas meets another Area Ranger name Lilly. Janet signs Thomas to Ranger School. Thomas quickly makes friends with two of classmates, Rhythmi who dreams of being an Operator, and Keith, a rival, who dreams of becoming a Top Ranger. After Thomas and Keith nearly discover what Mr. Kincaid, a teacher, is doing in the basement, Mr. Kincaid seals it off from all students. Both Thomas and Keith show strong potential as Rangers, and graduate with full honors after defeating two Tangrowth at their graduation ceremony. Thomas stays in Almia, while Keith and Rhythmi go to Fiore as part of their training.