In a coastal city shrouded in ancient legends, a mysterious organization known as the Reapers has emerged in recent years. They wield immense power, controlling the city's economic lifelines and the power of life and death. The protagonist, Zhou Penghao, happens upon a fateful wheel that lets him transmigrate through time and space, and gets caught up in this bizarre maelstrom. With the help of Qiao Lu, a detective with the Huaxia Investigation Bureau, and Xiao Chuo, a member of the underground judges, he investigates a series of cases. As their investigation deepens, they find themselves repeatedly crossing paths and clashing with the organization.
South of the Tropic of Capricorn is a thriller blending suspense, adventure, and supernatural elements. It explores both human greed and sacrifice, and reveals a profound truth hidden behind ancient legends: sometimes, the unknown is not something to pursue, and some doors are best left closed forever.