When Charlie tours with his band, Wes stays home in Chicago. It works because Wes' podcast has become his job, and he's always there when Charlie needs him. But when they throw a welcome home party for their newly-married best friends, Wes realizes how much Charlie expects from him without asking at all.
Everything comes to a head in a drunken declaration, which might be a proposal, except instead of a diamond, Charlie offers up Michael Jackson's Thriller. Music is what brought them together, what made them fall in love, and the biggest part of their life, but even Wes doesn't know what Michael Jackson has to do with Charlie down on one knee.