Little diplodocus lives in a quiet, lifeless home where everything follows a routine, and nothing ever changes. His biggest dream is to break through the stone wall and see the unknown, mysterious world. However, one day, their home is suddenly attacked by a mysterious “Blankness” Amid the chaos, Little Liang Long’s parents mysteriously disappear, leaving him alone to face this unexpected crisis.

In the final moments, his mother pushes him toward the wall to protect him from danger. Reluctantly, Little Liang Long sets off on an adventure, determined to find his parents and unravel the mystery of their disappearance.

In this world full of strange sights, he befriends a lost wizard and two eccentric scientists. As the adventure unfolds, Little Liang Long discovers an astonishing truth—he is actually a character created by a comic book artist, and he possesses the ability to jump across time and space! Will this unknown adventure succeed in bringing back his parents? And how will they resolve the crisis caused by the “Blankness”?