As the eldest daughter of a close-knit squirrel family, a young woman works tirelessly to support her many younger siblings, her overworked father, and her sickly mother. When she hears that the powerful Duke of the North is looking for a babysitter, she initially hesitates, knowing that even the imperial family dares not cross him. But when she learns the salary is a staggering 500 gold coins, she immediately changes her mind! However, caring for a tiger cub turns out to be just the beginning. Before long, she's also asked to become the duke's fake fiancée! What started as a simple babysitting job quickly turns into an unexpected adventure involving childcare, a fake engagement, and surviving life in the duke's household. Can she earn her fortune and return to the peaceful life she always wanted?