A film is being made to celebrate the 30th anniversary of the popular children's book series, Kaiketsu Zorori. In the film, Zorori makes a special alarm clock machine so that he can wake up in time to get free donuts. However, something strange happens when he remembers his mother and sheds a tear. Suddenly, scenes from the past flash before their eyes and the ZZ mark on Zorori's costume disappears. Though he has always treasured the mark, which was added by his mother, he has never known its meaning. After crash landing on the street, Zorori, Ishishi, and Noshishi are rescued by a fashion design student who turns out to be none other than Zorori's mother, Zororene. It turns out that the alarm clock machine had transformed into a time machine and had sent them all back in time. With the help of Zororene and later, Zorondo Ron (Zorori's father), the trio must reclaim their time machine from the police and a powerful monster.