Approaching a massive season sale, Josh becomes a mad moonshine scientist. Mark and Digger scramble to complete a technically challenging run while Mark risks a solo run of sour mash whiskey. Patti and David hit the Gulf for their biggest sale yet.

Mark and Digger celebrate their greatest hits and misses. Trace the paths that set these two legends on a crash course with destiny and one another. With new interviews and never before seen footage, they'll reminisce on the best and worst of moonshine.