Synopsis：The Blue爵 trio, specialists in exterminating evil alien beings, receives a report from a girl named Mary who predicts that her best friend will be murdered. Blue爵 dismisses her warning, but soon after, Mary's friend meets a violent death... One day, Blue爵 and Su Fei get lost and seek shelter in a remote cabin in the woods. The owner is an old magician, his son named Xiao En, and his daughter—none other than Mary. Strangely, Mary, who possesses the ability to foresee the future, has lost her memory. During their brief stay, Mary develops feelings for Blue爵, while Su Fei also takes a liking to Xiao En. Soon after, Blue爵 and Su Fei are mysteriously attacked and nearly killed. Upon investigation, Blue爵 discovers that the killer is a vicious two-faced alien from another planet. Their characteristic is that their good side falls in love with someone, while their evil side will kill that person. Are the old magician, Xiao En, and Mary kind humans, or are they the evil two-faced aliens? Will the love between Blue爵 and Mary, and between Su Fei and Xiao En, have a future? As the Blue爵 trio unravels layer upon layer of mysteries, the truth turns out to be...