

Seraphina once believed she was the only true love of the vampire prince Alistair. Five years ago, when her fiancé was caught having an affair with Isabella, it was Alistair who saved her and promised her eternity. Yet when she was pregnant and attacked by werewolves, Alistair abandoned her, transferred away all the healers, and caused the death of their child. Over the following five years, Alistair continued to favor Isabella. In the end, Seraphina’s heart completely died. She faked her own death and left—only for fate to bring them together once more.

In the fog-choked steam city of Verlock, Chloe Ashborne survives a brutal family massacre and hides herself as a disfigured, mute maid sneaking into the obsidian Clock Tower Manor—the stronghold of the cold and powerful Duke Liam. Covered in wax scars and pretending to be timid and clumsy, she hides her true identity as the last heir of the Ashborne mechanical clan, a master toxic healer, top gear decoder, and deadly combat fighter. Her only goal is to retrieve the sealed case files that record the truth of her family's murder from the manor's confidential machine room. As she lurks in the shadows, she repeatedly arouses Liam's suspicion and curiosity. She narrowly escapes frame-up and fatal traps set by the jealous captain of the female guards, saves Liam from fatal steam poison and assassin attacks, and secretly controls the manor's defense gear system in crisis. While the line between hatred and attraction blurs, Chloe's layered disguises are gradually stripped away one by one. When she finally breaks into the secret chamber to obtain the files, she falls into a carefully laid trap, and her true face and identity are completely exposed to Liam. The two fall into misunderstanding and confrontation, until the real murderer behind the massacre launches a full-scale attack on Clock Tower. Standing amid fire, gunsmoke and collapsing steam machinery, Chloe and Liam lay down their hatred, fight side by side to defeat the evil guild, uncover the buried truth, and turn a revenge disguise into a fated love bonded by gears, steam and redemption.

Wealthy heiress Lina Veyne is forced into an engagement with ruthless heir Lucien Moro to save her family, trapped like a bird in a gilded cage. At the IRIS Club’s secret Phantom show, she's shocked to find masked dancer ""Seven"" is Stian Quinn, her first love who was declared dead at sea 5 years prior. This is all Lucien’s cruel scheme: he faked Stian's death, and uses the supposedly amnesiac man to break and tame Lina once and for all. When Lina's reckless defiance only brings brutal punishment down on Stian, she puts on a mask of obedience to Lucien, while secretly plotting her revenge. She soon makes a shocking discovery: Stian's amnesia is a lie. He's been undercover at IRIS this whole time, gathering damning evidence to take down this dark empire for good.