It's summertime and the Rangers are looking forward to relaxing before entering their junior year in high school. When word of the upcoming Merciless Slaughter Summer in California Tour reaches their ears, they decide to go to both Angel Grove concerts. At the same time, the Teenage Mutant Ninja Turtles and the Moon Blossoms are heading to Angel Grove to not only support Mondo Gecko and AJ James by singing with them, but to also take a much needed summer vacation. Though for Lara Kingston, she's going to Angel Grove to look for answers to a nightmare that she keeps having. Meanwhile, as Rita Repulsa and Lord Zedd are considering other means to destroy the Rangers, an old frenemy of Zedd's Ivan Ooze shows up with the intention of destroying the Conorlian Power Coins as well as Earth. However, when Lara manages to retrieve her planet's Power Coins after the Rangers save the mutants and unlocks their powers, the mutants gear up to protect Angel Grove after Ivan renders the Rangers powerless. Go, go, Turtle Rangers!
