Cartoon Network: Toons of Fear (Halloween Horror Nights)

Cartoon Network: Toons of Fear is an upcoming horror maze for Universal Studios Halloween Horror Nights 29 were it shows the dark side of the network's greatest shows like Dexter's Laboratory, Courage the Cowardly Dog, Adventure Time, Regular Show, ThunderCats (2011) and Over the Garden Wall.

Plot
you're being introduced by Black Hat.