One morning after a night out, Y/n is sitting at the breakfast table, asking her brother how the rest of the part went because she left early. She picks up her phone and starts scrolling through Instagram when she comes across a story that makes her heart drop. Her boyfriend, Mattheo Riddle, making out with another girl, Astoria Greengrass. As her friends come together to try to figure out what's happening. Theodore Nott seems just as mad as her brother is at her now ex.