Shaliaze, who can see the remaining lifespan of herself and anyone she touches, signed an engagement contract with the crown prince, only to discover that her remaining 70 years had suddenly dropped to just 10!? When she tried to break off the engagement, not only her own lifespan but also her family members' lifespans began to decrease... Now she has no choice but to find a way to reclaim her lifespan while maintaining her position as his fiancée! A lifespan reclamation mystery romantic comedy begins here!!