Kassandra Black used to get away with things. She was her high school's anonymous vigilante, exposing bullies and predators. But when she's expelled for breaking into another student's car just weeks before graduation, her acceptance to Columbia is revoked. Now her future depends on behaving herself for the summer at Henley University under the watchful eye of her great-uncle Brian.
Being optimistic doesn’t come naturally to Grace Manning, especially not these days. Her family life has just been turned upside down, and things are getting weird with her best friend Eric. But at least she’s happy at her after-school job at a nursing home, thanks to Mr. Sands, a resident with Lou Gehrig’s disease who keeps up with Grace’s sarcasm, teaches her how to cheat at poker, and even lets her give him a Mohawk. And then one day, Mr. Sands asks Grace to help him die.