Love in the Last Days of Noah's Ark

At the end of the world, the ever-changing beauty killer Otis received a mission from country B to go to country A to assassinate the engineers of Noah's Ark and obtain the core results of Noah's Ark. In order to complete the task, Otis lurked in Simon's mansion. As the heir of the Simon family, Lydia often dealt with Otis. The daily interactions gradually made Otis and Lyida They are in love with each other, but the two cannot reveal their feelings because of their responsibilities. As the relationship between the two deepens step by step, their identities are also revealed, and the end is getting closer...