Joanna moves with her young son, Alfie, to the quiet town of Flinstead, seeking a fresh start. However, she quickly becomes entangled in the lives of local mothers and the unsettling dynamics of the community. When Joanna stumbles upon an online rumour about a child killer living in the town, she uses it to win over the mums at the school gate. As gossip spreads, suspicions bui...悲剧