Mayday is a dram broadcast on BBC One. It's May Day and a a tiny community is waiting for this year's pagan parade to begin. Local teenager, Linus Newcombe, watches as the love of his life, Caitlin Sutton, kisses a rival. On the other side of town, Caitlin's twin and the beautiful young May Queen, Hattie Sutton, is getting ready to become the town's symbol of new life. After Hattie fails to show up, the town is sent spinning by the knowledge that someone amongst them has taken her.