Follow the friendship between the Nobara family’s pet dog Shiro and a “small dinosaur”. Their connection helps the growth of Shinnosuke and the Kusakabe Defense Squad.

Amanda and her imaginary friend Rudger go on thrilling make-believe adventures. But when Rudger finds himself alone, he faces a mysterious threat.

One day, a woman named Chiyome Hesogakure with a child named Chinzō visits the Nohara family and claims that she is the real mother of Shinnosuke and takes him away…

When the five visit a private academy, Kazama is attacked, and left with reduced intelligence and strange bite marks.

Hiroshi and Misae have never been to a honeymoon trip to a foreign country. One day, Misae discovered an inexpensive and family-friendly holiday package to Australia and the Nohara family…

When the mysterious Shiriri turns his parents into children, Shin-chan must trek across Japan to help return them to adult form.