Casey and Raph head to Chinatown to find an engagement ring for April. They find one, all right. Too bad it has dark, transformational powers. Powers that are of interest to Hun and the Purple Dragons as well.

Serling, desperate to return to his own time, builds a makeshift Time Window. Unfortunately, he accidentally shrinks himself to five inches tall and goes on a time traveling adventure. Unfortunately, when he escapes the clutches of arguing Turtles, he is found by Wendell, an old man who has been hunting him since Serling destroyed his toy eighty years previously and wants to reproduce him.