Toby helps Kate relax in the midst of her fervent quest to lose weight. Beth questions the motives of Randall's biological father, as Randall adjusts to having his dad in his life. Rebecca and Jack begin to feel distant from one another. Kevin faces the consequences of quitting his job.

As the birth date of her triplets quickly approaches, a frazzled and emotional Rebecca forgets Jack's birthday. Dr. Katowski struggles with the loss of his wife and wonders how he'll be able to continue on with his life without her. Joe, the firefighter who delivered baby Randall to the hospital, fights to save his marriage.

As Kevin stresses about the premiere of his play, he receives support from an unexpected source. Randall struggles under the pressure of both his work and ailing father. Rebecca and Jack's Valentine's Day doesn't go as planned. Toby and Kate decide to dig deep and get to know each other's biggest secrets.

Jack heads to Cleveland to make things right with Rebecca on the night of her first big gig with the band. Randall, Kate and Kevin make big decisions about their futures.

It's the Big Three's 37th birthdays. Randall and Beth debate a big life change, Kate takes the first step in pursuing a new passion, and Kevin balances the demands of his career and relationship. Meanwhile, Jack and Rebecca deal with the fallout of their big fight.

Randall and Beth adjust to a new family dynamic. Kate books her first big gig. Kevin suffers a setback on his movie. Jack and Rebecca are visited by an unwelcome guest.

Kevin goes back to his high school to accept an award. Jack and Rebecca get excited about their kids' futures.

Kate and Toby's lives take an unexpected turn. Meanwhile, Rebecca encourages Kate's singing aspirations.

Randall and Beth are faced with a hard choice. Jack takes Randall on a college tour.

Rebecca finds solace with an old friend as the Pearsons struggle to cope with tragedy. Jack teaches Kevin and Randall to drive.

The Pearsons come together to celebrate Kate and Toby's wedding. Wedding planners Kevin and Randall struggle to pull off the big day. Kate is flooded with memories of Jack. Deja struggles to adjust to her new living situation.

Big changes are afoot for Kate, Kevin and Randall as they celebrate their 38th birthday. Jack and Rebecca go on their first date. Deja turns a corner.

A young Jack makes a decision that will impact the course of his life.

Kevin and Zoe land in Vietnam. In the past, Jack and Rebecca take a road trip to Los Angeles. Jack's war story continues to be revealed.

Kevin arrives at the Ville his father served in. Kate pursues a new opportunity. Randall debates Councilman Solomon Brown. In the past, Jack struggles to get through to his brother.

Kevin attempts to help Nicky. Randall and Kate reflect on differing memories of their childhood.

Rebecca helps Kate and Toby care for baby Jack. Zoe and Kevin look after Tess and Annie. Randall and Beth consider how to move forward.

Jack meets Rebecca's parents. New characters are introduced.

Deja pushes the boundaries of Randall and Beth's trust. Jack and Rebecca invite Randall's new teacher over for dinner.

The Pearson family gathers for their first Thanksgiving at Randall's Philadelphia townhouse.

The Pearsons visit New York City.

The Pearsons gather to celebrate Baby Jack's first birthday.

The Pearsons gather to celebrate their 40th birthday while musing about the day they were born.

Malik shadows Randall at work. Kevin struggles to connect with his new movie director. Jack and Rebecca struggle to sleep train their babies.

The Pearsons navigate huge family milestones together, from a distance.

Beth navigates qualms with her mother. Kevin and Kate bring their families together for dinner.

The family gathers for Kevin and Madison's wedding.

The Big Three celebrate their 41st birthday.

Kate and Toby's relationship evolves over a few years.

The Pearsons gather around Rebecca's bedside.

The Big Three come to new understandings about life.