Rise of the Teenage Mutant Ninja Turtles: The New Encounter

After The Turtles saved the world from the Aliens known as the Krang, they defeated and imprisoned again, ensuring peace prevails over their world. But they are put to the next test when a mysterious stranger named Venus De Milo who was created and experimented on and known as experiment 124 by her creator/ father/ and DNA donor named Baron Draxum from the underground city, Draxum raised her to be one of his armies to take over the surface world, but she despises him. Learned his plan, Then she got away from him and hid in the hidden city and became a vigilante as the 'Phantom', she trained in secret in the battle nexus plus a former friend of Lou Jitsu (Master Splinter) helped her learn who she is, then one day she encountered Leonardo during in the battle Nexus and he discovered that it was her, the vigilante from the hidden city that everyone has been talking about.