Walden decides to change his life after a health scare on Halloween, but he wants Alan's help to do it.
Walden asks Alan to sign a pre-nup, giving him second thoughts about the marriage.
Lyndsey makes her return from rehab. Alan and Walden try and keep up the act that they are a loving couple when the social worker comes to visit.
A birth mother considers having Walden and Alan adopt her baby.
Walden looks after a foster child named Louis, but they don't bond the way he hoped they would.
Alan begins to disobey Walden's rules so that he will look cool in front of Louis.
Walden and Alan become friends with three moms, but things become complicated after Walden ends up falling for one of them.
Alan and Walden attempt to convince Louis that Santa Claus is real.