Amber Appleton (Auli'i Cravalho) remains an optimist even when her personal life is far less stable than it appears on the surface. A musically gifted high school student with aspirations to attend Carnegie Mellon, Amber balances her beloved high school drama club helmed by Mr. Franks (Fred Armisen) with working long hours at a donut shop to help support herself and her down-on-her-luck single mom (Justina Machado). She also spends time at the local retirement community, giving care and attention to her favorite pessimistic resident (Carol Burnett). When new obstacles present themselves that threaten her dreams, Amber must learn to lean on the strength of her chosen family to move forward.