Eline, a knight commander who lived for the sword after losing her family, died at the young age of 30 due to a mysterious illness. However, she suddenly finds herself back at the age of 18, before joining the knight order, with a chance to redo her life! This time, she resolves to live as an ordinary count’s daughter and cherish her family. Yet, her instincts as a knight inevitably shine through as she heroically helps others. Witnessing her actions, the genius mage Flain begins to follow her around, claiming it’s for his “Eline Observation.” “I know all about you. How you were an exceptionally strong knight commander.” Can the strongest knight find happiness as a noblewoman?