Compatible/Distress Calls/An Issue of Trust/Dragon Form/Roots

The ninja contact old allies to prepare for the final challenge against the Diamond King. Our heroes also receive help from unexpected comrades-in-arms and new powers. Meanwhile, Master Wu and Misako have difficulty deciphering the scroll. Lloyd gives Garmadon a chance to show that he has changed. Can the ninja take dragon form and combine their Spinjitzu weapons? And will they be able to defeat the Diamond King to save Ninjago?