Lego Monkie Kid Episode 8 Skeleton Key Episode Title: Skeleton Key Episode Description: Demon Bull King's family has found a mysterious power source that will allow them to reclaim their former glory. However, it's locked behind an ancient gate. The key to it, which can open any door, was given to MK as a "Thank You" for saving the city over and over. After messing around with the key, Red Son finds them. It's a game of cat and mouse as DBK's family tries to get the key, and MK and Mei attempt to keep it out of their hands. Unfortunately, MK fails and the DBK family runs away with the key. The gate is open to the surprise of a bone spirit possessing the Demon Bull King and his minions.