Detective Moon Hyejin's investigation about the IPG and Park Manse brings her deeper into the scandal-filled world of K-pop, while at the same time bringing her closer to the Red Velvet members. A new evil plot from Park Manse is brewing, presenting fresh problems for Yeoni and his relationship with Jennie, Jisoo, and Irene. The first part of the epic finale to the fan-favourite Lovesick Monster Saga begins.