Selah Cardi is a former marine biology student who woke up in a romance novel as an inconsequential extra. Eager to survive the plot, Selah manages to rescue Maria so that she and Duke Herbert, her fiancé, will be indebted to her. But then Admiral Ellaim notices her and her magical abilities that allow her to breathe underwater. Selah soon discovers that Ellaim is a merman called a siren, and that he needs her powers to recover from a mysterious illness. Will her dream of retiring by the sea in peace ever come true? (Source: WEBTOON)

Han Seo-Ha is a warrior who fought to the end against the evil empress who ruled the world. She died in a final battle, but woke up in the past, the day she entered a portal called “Gate Dragon.” This portal was actually a virtual reality game that took people to a fantasy world full of monsters and dangers. She decided to use her knowledge of the future to survive and change the fate of the world but, she will have to face many obstacles and enemies who tried to stop her, Seo-Ha will also find several allies and friends who helped her on her journey.