Family and friends celebrate WIll's birthday with chocolate and a giant cake!

The kids go sledding during their family vacation in Vermont.

Will and Zoey experience snow for the first time.

Bill and Jen go out to dinner to discuss Jen's job offer and what it means for their future.

Bill and the kids shop for toys to donate to families that are less fortunate.

The family gets into the holiday spirit by decorating the Christmas tree!

While writing letters to Santa, Will and Zoey receive an unexpected call from the man himself.

The family attends a pet adoption event at Bill's store.

Jen helps the kids make Bill a giant birthday card.

Will and Zoey have their weekly swim lesson with Jarrod.

Family story time turns into a discussion on what it means to be a little person.

Bill and the kids hit the grocery store to buy ingredients for his birthday dinner.

Will and Zoey take the wheel as they head out trick or treating with their parents.

With Jen's best friend Amy in town with her kids, the group heads to the local boardwalk aquarium.

Will meets with his speech therapist Anna.

Jen and Bill take Will and Zoey to the geneticist for a check-up.

Will meets with his speech therapist Anna.

The family reunites with Martha, the owner of the adoption agency that placed Will with their family.

The kids get a new fish tank, and one of them is really excited.

Jen speaks about her journey to battle cancer.

With Jen's best friend Amy in town with her kids, the group heads to the local boardwalk aquarium.

Zoey has a runny nose and Will is on clean up patrol.

Jen gets a check-up from her doctor.

Will and Zoey take the wheel as they head out trick or treating with their parents.

Jen and Bill step back as Will and Zoey take over decorating Will's room.

Will and Zoey have their weekly swim lesson with Jarrod.

Bill tries to rangle Zoey and Will for a photoshoot, but the task is easier said than done.

It's almost Christmas at the Klein-Arnold household. But first, Jen has a huge project at the hospital so Bill takes the kids out to a mini-bowling alley while Jen puts in extra hours at work.

Bill and the kids hit the grocery store to buy ingredients for his birthday dinner.

Take a ride on the Polar Express with the Arnold-Klein family!

Jen helps the kids make Bill a giant birthday card.

Will sees just how much fun learning and science can be, even if sometimes it is only playing with toilet paper.