Zoey tries to convince Walden to cut his hair and shave; Alan and Lyndsey revive their relationship.
Walden tries to loosen Zooey up by sharing some of Berta's special brownies.
When a huge storm keeps Walden, Alan, Zoey and Lindsay at home on Valentine's Day, conflict brews and relationships are strained.
A near-death experience has an adverse effect on Zoey and Walden's relationship; Alan thinks Lyndsey may have a drinking problem.
Alan offers to help get Charlie's cleaning lady back if Charlie can get Jake ready to go out to dinner with his mother.
Charlie and Alan meet several women while attending one of Jake's soccer games.
After Evelyn's new beau dumps her, Charlie and Alan enlist Jake to cheer her up; Charlie teaches Jake a lesson about screening telephone calls from women.
For a school assignment, Jake draws the tattooed buttocks of Charlie's female friend.
Charlie realizes Jake's classmates know the words to all of his jingles, and he is inspired to craft the fourth-grade musical with unusual results.
Jake and Evelyn befriend one of Charlie's one-night stands, causing her to stay longer than expected.
In an attempt to prove that he is a family man, Charlie invites Lisa (Denise Richards) over for Thanksgiving dinner.
Alan reluctantly agrees to a makeover after running into his ex-wife and her new beau; when the brothers go shopping, they clash over what to buy.