Ninjago: Masters of Spinjitzu: Crystalized

The ninja have been locked up in Kryptarium Prison where they are surrounded by some of their old enemies. Here they learn a mysterious Crystal King is recruiting a council of evil enemies. To find out the identity of this new enemy, they escape from prison and become fugitives. Who is the Crystal King? Why is he gathering a powerful counsel? Get ready for another action-packed mission with the ninja!