With the development of the city, the old district of Bigfoot Tsui where McDull lives has also been involved in the whirlpool of demolition. However, the carefree McDull never considered what the demolition meant to him. Springfield Huahua Kindergarten has started school again. In order to adapt to the fierce social competition, Spring Flower Kindergarten has also added many hilarious new courses: cheating, cheating to death, etc. Mrs. Mai bought a cemetery in Zhangmutou in order to have a place to settle down in the future. Time flies and everything goes back to the past, back to the era of McDull's father, Prince Pineapple Oil. The prince traveled with his master, but unexpectedly encountered a series of strange things. The prince was no longer a prince, and someone changed into him and became a prince. The confused Pineapple Oil met A-Lian. From now on, Mai Tai would lead an ordinary and mediocre life. However, at night, Pineapple Oil would occasionally think of his kingdom, with tears in his eyes. Alian is pregnant, and Pineapple Oil reunites with Turtle Boy, who used to deliver pancakes, and the chef who traveled together. They decide to go back to the country. So Pineapple Oil said goodbye to Alian and told him that if he didn't hear the news about a prince returning to the country tomorrow, then forget him forever...