Nearly thirty years ago, a Dark Elf Lord sought the hand of Thor's daughter, hoping to unite their races through marriage. He professed his undying love, but Thor opposed the union and cunningly sent the Lord on a quest to prevent the marriage. Thor's plan succeeded, but it triggered a devastating Civil War, leading to the death of his daughter. To protect her child and halt the conflict, Sif hid their daughter, Sierida, on Earth.Now, Sierida has returned to Asgard after years of exile. For two weeks, she has been adjusting to her new life with the help of friends, struggling to reconnect with her parents and family. However, she remains unaware of the danger approaching her.Lord Callaen, having learned of Sierida's return, has mobilized his forces. Driven by a vow of vengeance for his brother's death, he marches toward Asgard with one goal: to ignite a new Civil War and take Sierida's life. He is relentless and will stop at nothing to achieve his long-held promise of revenge.