It’s Halloween week for the Turtles and Rainbooms after throwing a big party last year. However, an enemy from Shini’s past casts a spell that transforms the Ninjas, Rainbooms and their unexpected allies, Fun Time Rush, into monsters. With Shini’s help, they will go to the town of New Salem to undo their curse. However, what lies ahead in New Salem may be surprising for the Turtles, Rainbooms, and their anllies plus a surprise guest.