Rosie a member of a mysterious assassination group known as "Aces" suffered a betrayal during her last mission. With 2 gunshots on her body she fell off a cliff. But as she was about to take her last breath, her soul transmigrated into a different body in a very different era. Later, she found out that the owner of the new body, Rose Ann, is the young daughter of the city leader. A weak girl that often get bullied by her own stepsister and step mom.