A few years have passed and Hank is living in New York but looking for a ticket out of town after his latest breakup. He accepts an invitation from Charlie to come to Los Angeles for a job writing a film starring rapper/actor Samurai Apolcaypse, then reunites with Karen, her former professor and now-husband Richard, and his daughter Becca, who now has a boyfriend named Tyler that is the spitting image of Hank himself ... in the worst possible way.

Hank hands a completed draft of "Santa Monica Cop" over to Samurai Apocalypse, but he still finds himself stuck in L.A. when he's asked to take Kali, his "acquaintance" from the flight to Los Angles, out for a night on the town. Tyler crashes at Karen and Becca's house while he recovers from his injuries. Charlie is rescued from a serious parental crisis by Stuart's nanny, Lizzie.

Hank overstays his welcome at the house of Karen and Richard and hits the road with one last stop at Malibar, where he runs into Lizzie, who uses her newly acquired acting chops to lure him back to the Runkle Manor. Once there, Hank is surprised by everyone he loves and loathes: Karen, Becca, Charlie, Marcy, Stu, Richard and his creepy sponsor, Gabriel. Even Sam and Kali show up, but it's not a party until someone gets hurt and luckily for these partygoers, Hank has it in him for one final run-in with Tyler.

Hank discovers the bartender at a local watering hole is his late friend Lew Ashby and wonders if he's in Hell. Richard makes a startling announcement about Hank and Karen. Hank tries to make things right with Becca, but her news about Tyler leaves him stunned. On the set of "Santa Monica Cop," Sam's jealousy and fondness for firearms give Charlie an opportunity to show how much he loves his best friend and number-one client; Hank's arsonist ex-girlfriend surprises him with a way for them to be together forever.