Mark, a brilliant scientist, met a tragic end while defending his sister from a merciless attacker. But death was not the end of his story. In a twist of fate, Mark finds himself reborn into a fantastical world, inhabiting the body of a young elf girl named Serafina. This new Serafina carries the memories and intellect of Mark, a stark contrast to the life of hardship and oppression she previously endured as a slave under the tyrannical Lord Vassar. Now, fueled by Mark's thirst for knowledge and Serafina's burning desire for revenge, she embarks on a journey to dismantle the oppressive regime and avenge the death of her mother and fellow elves. As Serafina grapples with the merging of two identities and the lingering trauma of her past lives, she must learn to control her newfound abilities and harness the knowledge she possesses to achieve her goals. The journey is fraught with danger, forcing her to confront not only external enemies but also her own internal demons.