The story of Bea Johnson from birth to graduation as she navigates life with an intellectually disabled parent and an extended family who can't quite agree on the best way to help.

Kiernan Shipka
as Bea Johnson

Alexandra Daddario
as Joy

Charlie Plummer
as Ethan

Jean Smart
as Peg

Jacki Weaver
as Loretta

Kannon Omachi
as Nia

Dash Mihok
as Derek

Reid Scott
as Ben

Samantha Hyde
as Sharon

Ryan Kiera Armstrong
as Young Bea