Power Rangers: Season 12, Episode 1

12 - 1: Day of the Dino (1)

Tommy Oliver, formerly the greatest of all Rangers, fights legions of mysterious beings as he flees an island, which eventually sinks beneath the sea. A year later, Oliver arrives at Reefside High School eager to begin a new life as a teacher, only to find a familiar name at large, and three eager, hot headed students, Kira, Conner, and Ethan, who stumble onto Tommy's collection of ancient Dino Gems, which provide the three with amazing powers and abilities...