It's about two siblings that move to a town for the summer with their great uncle stan, who runs a shack and often rips people off. The great part about it is that there is this whole "mysterious" part to the town, and a bunch of cool paranormal stuff happens. It's hard to put into words, I would recommend you go see it for yourself. let's just say that I love it, despite it being from the disney channel.
I strongly dislike one of the main characters, and some of the "awesome, bro" jokes get old, and the art style is easily mimicked,but that's not really their fault. But again, minor problems, no show is perfect. it's still very good.