In a dangerous neighborhood where accident-prone siblings Domu Domu and Do Do Hae, who know nothing of safety, and their mischievous friends Mushi Khan, Han Sim Hae, and Gorilla live, appears the super nanny An Jeon Man, who dedicates all her energy to safety. Through An Jeon Man, we will explore the various dangerous situations that occur in this neighborhood, where there isn't a quiet day due to the children who constantly cause incidents and the plans of Wang Dae Chung and his subordinate Sseuregi Tong to drive away the super nanny. We will also learn about safety rules, preventive measures, and how to handle crises.