Bill and Jen discuss their children and the meaning of their smiles.

Jen meets with a physical therapist about improving her muscle strength and mobility.

To celebrate her 40th birthday Jen thinks the family is going to Galveston for a beach vacation , but Bill has a big surprise planned for his unsuspecting wife.

Bill talks about being a working Dad and how it's changed his life. He also talks about the obligation associated with adopting children.

Jen takes her mom and daughter with her to the spa for a pedicure before the vow ceremony.

Will has been able to feed an elephant and a giraffe in the past few months. Bill remembers the time they met the elephant in Mumbai.

Bill takes Jen to a secret place in the hotel to propose for the second time. She said yes!

Bill and Jen show off their silly side, but also they talk about the moment they met and fell in love.

Bill hangs Will's growth chart in his room and Will tries to be a good helper, but as a four year old boy, he is easily distracted.

When it comes to cutting the cake Jen takes the lead in directing the procedure. Watch The Little Couple Tuesday's 10/9c.

Jen talks about telling Will and Zoey that Mommy is sick with cancer. Will understood that Mom was not feeling well, but might not understand what cancer really means.

The Klein family enjoys a fun ride on the carousel.

It's Easter and while Jen is doing rounds at the Hospital, Bill is at home teaching Will and Zoey the art of dyeing Eggs.

Bill gives an open and honest answer to his feelings about Jen being diagnosed with cancer.

Watch the moment that Jen found out from her doctor that she has beat cancer. Her heavy treatment paid off and her prognosis is excellent.

Life in "The Little Couple" household has changed dramatically since returning from India with second child, Zoey.

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.

Will meets with his speech therapist Anna.

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

Jen speaks about her journey to battle cancer.

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

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

Jen gets a check-up from her doctor.

Will and Zoey have their weekly swim lesson with Jarrod.

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

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

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

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.

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.

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