When it comes to every monster's favorite game, Goreball, Zelli and the Danger Club are no match against the undefeated Waterdeep Dragons. When all hope seems lost for the gang of misfits, an unlikely new friend steps up to teach them how to unlock their hidden talents. Zelli and her friends will need to trust their new coach's advice if they plan to defeat the fearsome Waterdeep team. But it won't be easy -- especially since their new coach is a dragon!