Leah was the most popular girl at Wilborn Academy until a screenshot of her circulated and she committed suicide. She left behind a diary, that was addressed to seven individuals. They must read the entry about them, and write on the back page why they did what they did, and when they've done those two things, they must rip out the pages, throw it in the river and pass it on to the next person. If they fail to do that, screenshots, messages, tweets and a copy of the diary will be published for everyone to see. When the diary falls into the hands of Cassandra Walker, she is left to piece together the puzzle and figure out who was responsible for Leah's death.