When a letter that was never meant to be seen draws high school senior Evan Hansen into the Murphy family's grief over the loss of their son, he is given the chance of a lifetime: to belong. He just has to stick to a lie he never meant to tell. That the notoriously troubled Connor Murphy was his secret best friend. Connor's wealthy parents have taken him in like he was their own, desperate to know more about their enigmatic son from his 'closest friend'. As Evan gets pulled deeper into their family, he knows that what he's doing may not be right, but if he's helping people, how wrong can it be?