Harold's Home is Chicago-style improv, through and through.
Who's Harold, and why is he home?
Harold is the name of a specific improv format developed and popularized in Chicago, the improv Mecca. It's done everywhere these days, and there are as many variations of it as there are kinds of chili.
Harold is, in fact, the basis of the Seinfeld show format (most improvisers know this...no one else does. But now you do!)
It's ever-changing, ever-surprising. It's a trippy, dynamic form, performed by players who've been trained by the Masters in Chicago and New York. So, you're in good hands every time Harold's Home!