Publisher's Synopsis
The crayons woke up and found that the yellow crayons were gone! Next, the friends disappeared one by one, leaving Crayon Xiaohei alone. Could it be a ghost made by a monster? I must find everyone back! The brave crayon Xiaohei followed the mysterious footprints, and finally found his friends. Unexpectedly, they were unwilling to leave with him! It turned out that the mouse family who lived in the cave hoped that they could paint a picture for the elderly Grandpa Mouse in which would make him happy...
