chunk: Three thousand years ago, an Aztec warlord named Yaotl and his four generals discover a portal opening into a parallel universe which is said to have great power. Yaotl becomes immortal from the power, but his four generals were turned to stone. The portal releases 13 immortal monsters (such as the Bigfoot, the Centaur, Lethargo the Mapinguari, Aracknor the Jbafofi, Succubor the Popobawa, the Jersey Devil and the Sea Monster) that destroy his army as well as his enemies. In the present, the Teenage Mutant Ninja Turtles have grown apart. After defeating the Shredder, Master Splinter has sent Leonardo to Central America for training. Donatello works as an IT specialist, Michelangelo works as a birthday party entertainer called Cowabunga Carl and Raphael works at night as a vigilante nicknamed Nightwatcher. April O'Neil operates a company that locates and acquires relics for collectors with the help of her boyfriend, Casey Jones.