Yin and Yang use the Chronologicum to travel back and time and unmask The Night Master's spy, but a mishap causes them to get separated in two different times.

BURBANK, February 23: The animated series Yin Yang Yo! has been ordered for a second season of 26 half-hour episodes by Jetix in the U.S., airing as a block on the Toon Disney channel. The second ...

LOS ANGELES (Hollywood Reporter) - "Yin Yang Yo!" -- the highest-rated animated series on Toon Disney's "Jetix" programming block -- has been picked up for a second season. The network has ordered 26 ...

The Night Master plots to kidnap Master Yo so he can plunge the world into darkness and be free.