Su Xiaotong, along with her husband and son, moves to Lishi to start life afresh. At the invitation of a neighbor from apartment 1203, the newcomers become part of the "Big Family" - a close-knit circle of residents of "Yuehaiwan" who gather every evening around a common table and seem to embody friendliness. However, the idyll collapses when the Xiaotong family unexpectedly finds themselves among the heirs of their neighbor above. Two hundred fifty million yuan will be divided among the members of the "Big Family" with one condition: all of them must live in the complex without leaving for twenty years. But even more importantly: the fewer the heirs, the larger the share for each. The pursuit of wealth soon turns into a bloody game - anyone is ready to commit murder, and police officer Tan Yun finds himself at the center of a dangerous intrigue. The deeper he delves into the investigation, the clearer it becomes to him that all this is somehow linked to a horrific discovery he made two years ago in apartment 1203...
