Nick fears that Sheila is trying to get back together with Chris and vows to stop it. Meanwhile, Gary reluctantly takes on Marny's sister as his assistant, with surprising results.

Gary tries desperately to juggle his budding business and life as a stay-at-home dad; Chris and Sheila overreact about Ernie's development.

Gary conceives an amazing new product that's perfect for parents.

Gary's near-death experience sets off a crisis with Nick and Emily; Sheila hires a hot nanny.

Seeking personal time, Marny gets caught in a web of lies; Nick and Sheila form an unlikely trivia team.

Gary's a bundle of nerves when he finds out Marny's dad is visiting.

As Sheila and Chris anticipate Ernie's first word, we learn the story of how the couples all met.

While Chris and Sheila squabble over her engagement ring, Emily convinces Gary and Marny to spice up their marriage and go on a romantic date.

Unable to decide who gets Ernie for Thanksgiving, Sheila and Chris try celebrating together; Gary camps out for a Black Friday bargain.

Sheila and Chris battle over how to celebrate Ernie's first birthday.

Chris and Nick face an ordeal when their sons lock themselves in the bathroom.

The gang convinces Chris to date the new building co-op board president in order to save their annual Halloween celebration.

When Gary complains that he needs a day off from the kids, Marny discovers solo parenting is tougher than it looks.

All three dads run into unique problems trying to discipline their kids.

When Marny makes moves to have another child, Gary looks to the guys for some help with population control.

Things get hectic when Gary forgets his wedding anniversary; Nick is stunned that Chris' new girlfriend doesn't remember she once dated him, and Chris deals with Sheila overstepping her boundaries.

Three 30-something dads try to hold onto their youth as they face the responsibilities of having kids.