After enduring a string of family tragedies, Calliope Rustichel loses all hope until a mysterious woman offers her a second shot at life. Much to her surprise, this opportunity resets her existence back to infancy! Trapped in an adult mind within a baby's body, Calliope embarks on a quest to unravel the sinister plot behind her family's demise, leveraging her past memories to alter the course of fate. Amidst mastering basic skills like walking and talking, she navigates a world where being a baby involves more than just naps and diaper changes.