Zuzu is kicked out of the house by her adoptive father and stepmother Cindy Munro. She calls her Youngest Uncle in the snow, and is picked up by the Sullivan Family's eight uncles and Grandpa Sullivan, confirming Finn Lane is not her biological father. She receives a protective lucky red string from her master Jett Quinn, and is born with innate superhuman strength. After returning to the Sullivan Family, she faces exclusion from her Eldest Uncle's wife Vivian Voss and cousin Hannah. At her birthday banquet, the wrongdoings of Finn Lane and his wife are investigated and handled in accordance with the law. Zuzu is kind and warm-hearted, repeatedly reaching out to help others, and is reunited with her biological father Kai Munson. The whole family works together to collect evidence and hand over the wrongdoers to the relevant authorities for handling. Zuzu grows up slowly under the care of her family, accompanies Grandma Sullivan to recuperate, and grows stronger while protecting her loved ones.