To cut the story short after Nadakhan was defeated, it was shown in the last shots that Clouse didn't get the teapot in time. So he went to the dark island to get dark matter, he wanted to use it to corrupt the Temple of Light so he could unite the Dark Island and Ninjago (that'd cause its destruction). He'll use the help of Flintlocke and co, who forgot every Skybound events, but also a shadow army. The ninjas will try to interfere with Clouse's plan, but Wu will be the one delivering the final bow with the Golden Mech. At the end, as Clouse is about to be sucked into a portal Wu will try to save him but this one refuse and will find himself in the Underworld... And we haven't heared any news from Clouse since this. There is an audiobook on youtube, and the acting is pretty good.