After losing her parents, Seirena is forced to marry an elderly king and endure terrible abuse. Moreover, her uncle betrays her and eventually kills her. That should have been the end... But she wakes up back in the past, before this tragedy unfolded. This time, Seirena has a plan. She will change her fate by becoming a Chevalier, the highest rank of knight, to protect herself and her family. But having a relationship with her handsome captain was not part of her plan!