When the evil Warstar aliens attack Earth, the supernatural guardian Gosei, assigned to protect the Earth by Zordon, and his faithful robot assistant Tensou recruit five teenagers with attitude to combat the invading forces. Equipped with powers that grant them mastery over martial arts and other forms of combat, the teenagers transform into the latest champions of good: The Power Rangers Megaforce. In the second Super Megaforce season, when an alien armada plans to invade the Earth, Gosei gives the Megaforce Rangers new Morphers and special keys to allow them to become the Super Megaforce Rangers and also imbues them with the power to transform into any past Power Rangers.

Power Rangers Megaforce is the current twentieth season of the long-running American children's television program Power Rangers. The show is produced by SCG Power Rangers and began airing on Nickelodeon on February 2, 2013. The show will be part of the Power Rangers 20th anniversary. Kidscreen reported that Megaforce will feature "the return of many historic Rangers." Megaforce uses footage, costumes, and props from the Japanese Super Sentai Series Tensou Sentai Goseiger.

A sequel season will be called Power Rangers Super Megaforce (following "Super Samurai" as the Power Rangers Samurai sequel).