The story kicks off with Hank's return to L.A. after the old man's funeral. He's very happy since he has, at last, produced a new manuscript, and insists Karen read it before he hands it over to Charlie. In the meantime, he receives a fat bonus paycheck, of which he takes advantage to get a new car for himself and a new guitar for Becca (bonding's important, you know?). As for Charlie, the threesome from the previous episode has unexpected effects when Marcy tells him she's embarking on a lesbian relationship with Dani.
Aside from the usual character quirks, which emerge in all their charm, Filthy Lucre sets in motion a subplot which will define the rest of the season (if you paid attention to the Mia scenes in the last few episodes, it's pretty obvious), a fact confirmed by the charmingly downbeat ending - a bittersweet sequence that reminds us how big a lovable loser Hank can be. There's no beating that guy.