Despite its dark premise — Kimmy (Ellie Kemper) begins the show as an ex-mole woman who has been held captive in an underground bunker since she was a teen — Unbreakable Kimmy Schmidt is an uplifting show about the power of optimism and never giving up. Kimmy's journey of self-discovery can switch from hilarious to heartbreaking in the matter of a scene, but what makes this show so great is just how irrepressible Kimmy's belief in humanity is even after she's witnessed the very worst of it.