The TMNT return to their sewer lair to find that Splinter gone and broken Mousers everywhere.
The Turtles call April and ask her to hide them and she agrees. She picks them up with her van.
A robbery takes place with an identical van and the police try to pull over Aprils van. A high-speed chase ensues and eventually the two vans are next to eachother and the police pull over the other van.
Meanwhile, Splinter is shown to fight off the Mousers until the Mousers are turned off. He then is taken by the Utorms, a brain-like alien, to treat his injuries.