High school senior Evan Hansen has been given the chance of a lifetime: to belong.

When the notoriously troubled Connor Murphy took his own life, he did so in possession of a letter Evan had written to himself. Now everyone thinks they were best friends.

As he helps Connor's family deal with their grief, it's clear that Evan isn't invisible anymore - even to the girl of his dreams. Every day is suddenly amazing.

But Evan is soon pulled deeper into Connor's family's swirl of anger, regret, and confusion. And then everything starts to go wrong . . .