The unfortunate events of one terrible holiday lead to the Pearson family's Thanksgiving tradition; Kate makes a life-changing decision; Randall mak es a startling discovery.

It's a hot summer day at the pool! Kevin experiences his first NYC audition; Kate stalks Toby's ex; William's past sends Randall spinning.

Struggling with grief, Rebecca (Mandy Moore) makes a secret pact with William (Ron Cephas Jones); Kevin (Justin Hartley) decides to move to NYC; and Toby (Chris Sullivan) puts Kate (Chrissy Metz) in the limelight.

Jack and Rebecca struggle to overcome distance in their marriage; Toby encourages Kate to let loose; Kevin faces fallout from his meltdown; and Beth protects her man. Katey Sagal guest stars.

Mandy Moore, Milo Ventimiglia, Sterling K. Brown and more star in the ensemble drama about a group of people who share the same birthday and so much more than anyone would ever expect.