The series follows the adventures of five teenagers – Jason Lee Scott (Red Ranger), Zack Taylor (Black Ranger), Trini Kwan (Yellow Ranger), Billy Cranston (Blue Ranger), and Kimberly Ann Hart (Pink Ranger) – who are chosen by the wise and powerful Zordon to become the Mighty Morphin Power Rangers. With the guidance of Zordon, his assistant Alpha 5, and the Rangers' mentors, Bulk and Skull, the team must defend the Earth against various villains, including Rita Repulsa, Lord Zedd, and their minions.