Will takes Marcus to the ER after an accident with a knife.

Fiona intrudes on Will's poker night. Meanwhile, Marcus goes on his first sleepover.

Marcus' dad makes a surprise visit. Meanwhile, Sam's demanding work schedule leaves little time for romance.

Will turns to Andy for advice after Sam gets a job offer in New York in the Season 1 finale.

Fiona oversees a project for Marcus' class. Later, Marcus goes on a shopping spree with Will.

Will orchestrates his yearly halloween extravaganza and fiona finally lets her hair down.

Will invites Sam to move in with him after she is forced to evacuate her apartment. Later, Will and Marcus build a tree house.

Marcus is cast as Romeo by a new teacher in a school production featuring Shakespeare scenes.

Looking to make some quick cash, Will decides to start teaching guitar lessons. However, after a fling with his student's mom, Emma, Andy speculates that Will is being paid for more than just his musical expertise. Elsewhere, Fiona finds herself suddenly accepted by the popular moms at school and Marcus prepares to perform at the upcoming school fundraiser.

Fiona gets dating advice from Dakota.

Will invites Sam to a game night hosted by Andy and Laurie.

Scheduling problems arise as Will tries to plan a birthday party for Marcus. Meanwhile, Fiona and Sam get into a disagreement.

Will is told to sell his San Francisco home in order to solve his money issues. So he decides to find Marcus a brand new best friend.

Will is sued by an angry ex-girlfriend.

Feeling nervous about her first real date with Mr. Chris, Fiona wants Dakota to come with her as her safety net. Will ends up tagging along as well as he attempts to woo Dakota.

The Christmas celebrations are now in full swing but Will is not having a good time. With the lawsuit still pending, Laurie advises him to settle and move on with his life. Fiona and Andy attempt to create the perfect white Christmas for Marcus.

To celebrate a year of friendship, Marcus convinces Will to take him to the Golden Gate FemFest. Meanwhile, Dakota helps Fiona prepare for a night of intimacy with Chris.

Will accompanies Andy to the Bar Mitzvah of a music mogul's son.

Marcus develops a crush on a girl who has a penchant for trouble.

Marcus asks Will for advice on how to get invited to a girl's birthday party.

Will returns to sort out a few things but ends up staying longer than planned when he sees Marcus's new "friends".

Music mogul Johnny Idalis listens to Will's new song, but wants him to improve the hook. Marcus is frustrated with his mother's burgeoning relationship and leaves to crash with Will.

Will is convinced that Chris is cheating on Fiona so he follows Chris to a hotel, where Chris reveals he has accepted a job offer out of the country, while Fiona prepares to tell Chris she loves him. Meanwhile, Marcus is trying to raise enough money to take Shea on a date to the movies so Marcus sells his silence to Andy for $100.

Will plays wing-man for Marcus, but Marcus wants to win Shea back at the school dance, Liz dumps Will after he defends Fiona, Marcus professes his love for Shea, Fiona and Will kiss.

Will struggles to pull off a guys' night out. Later, Andy asks Will to be his son's godfather.