Part-time vlogger Chu Ai uses her channel to speak candidly about sex. But in real life, she finds that subject to be so much trickier.

Adapted from the historical facts of Taiwan. On March 12, 1867, the American merchant ship – Rover was shipwrecked at the southern end of Taiwan’s Hengchun Peninsula. While “The Rover Incident” broke out, Tiap-moe was 18 years old. She was proficient in multiple languages, so she helped American Consul Charles Le Gendre with his investigation. During the investigation, she were forced to involve in a complex ethnic struggle. Facing the questioning and bullying associated with her ethnic groups, gender and bloodline, was Tiap-moe brave enough to help the Westerners, the Seqalus, the Hokkiens and Hakkas, even herself, to reach a state of peace and understanding?

Jia-min, who was born sensitive to the paranormal, tries to summon "Yi-A-Gu" with two streamers. Huo-ge helps Jia-min subdue the spirit when the situation goes out of hand. Huo-ge possesses supernatural powers but lost his will to exorcise demons during a battle with the Thai Demon five years ago. As the wave of suicides continues, the village is thrown into chaos. Another battle is about to begin.

Chi-yi is a veteran cop, who values his own safety more than anything else and is therefore infamous for his cowardice and poor efficiency at work. Yi-ping, on the other hand, has just graduated from the police academy and is more than ready to prove herself regardless of any risks. Daughter of the head of the National Policy Agency, Yi-ping is secretly kept away from danger by being appointed to team up with Chi-yi. Starting from a seemingly pointless case of a puppy’s accidental death, the essentially incompatible pair unexpectedly dig up the clues to a series of mysterious deaths.