Ma Ri’s plan was to lure Nak Gu to the Chulreong Bridge and see how things pan out. However, Nak Gu actually fell for her trap and ended up falling off. The police investigation begins and Ma Ri becomes the main suspect. However, without Nak Gu’s body, the investigation hits a dead end. Meanwhile, the other two girls are also going through their own once-in-a-lifetime moments.