Jake kisses Missi (Miley Cyrus) and later talks to Alan about his night with her.
Walden is hesitant to call Missi's (Miley Cyrus) mom until she shows him a photo of her and is shot down by Missi.
Missi (Miley Cyrus) suggests that Walden hook up with her mom, even though he thought she was coming onto him at first.
As Jake is about to leave to go back to the army, Missi (Miley Cyrus) tells him that she is going to try and work things out with her ex-boyfriend.
Walden can't remember why he came downstairs until the doorbell rings and a new house guest (Miley Cyrus) appears.
Walden finds himself attracted to his friend's daughter (Miley Cyrus) when she asks him to put sun screen on her back and takes off her top to tan.
Alan tells Walden that he and Lyndsey want to have a threesome with him.
Alan suggests that he and Lyndsey spice things up since their relationship has become too predictable.
Walden breaks down about Zoey during his threesome with Alan and Lyndsey.
Alan and Lyndsey get ready to have a threesome with another woman...until she meets Walden.
Walden chats with Zoey about getting back together until she overhears Alan talking about Walden kissing Lyndsey.
While Alan bleaches his teeth, Walden gets a dose of reality when Ava invites him to her birthday party and tells him that her mom is in the shower with another man.
After Walden gets Ketchup all over Alan, Alan answers the door in his underwear when Robin stops by.
Alan organizes an intervention for Walden after his breakdown over losing Zoey.
After Walden's new dog turns out to be too much to handle, he decides to give it to Ava as a birthday present, leaving Zoey to have to take care of it.
Walden gets upset when Billy rubs his break-up with Zoey in his face.
Jake and Alan make it to the Grand Canyon.
Linda takes Walden to bed.
Linda and Walden get high together and tell each other all there is to know about one another.
Stacey, Linda and Walden go out to dinner but Stacey bales to party with her friends.
Walden realizes he is more attracted to Linda then he is to Stacey.
Hillary Duff and Marilu Henner guest star as hot grandmother and hot granddaughter.
Everyone freaks out when they realize someone they thought was dead is not.
Alan has found his soul mate.
Alan goes back to a girl's apartment and has some trouble with his new makeover.