After getting drunk one night, Xiao Nan accidentally stumbles into the dream-catching net of Old Li, a dream-catching hunter, and unexpectedly absorbs a century-old dream spirit. The two head to the Dream Painting Academy for help, hoping to draw the spirit out. However, they discover that Xiao Nan is a person who never dreams. Old Li has no choice but to take Xiao Nan as his apprentice and teach him the art of dream catching. After being trained by four teachers known as Brush, Ink, Paper, and Inkstone, Xiao Nan inherits Old Li's legacy, only for Old Li to suddenly disappear. While searching for Old Li, Xiao Nan arrives at the Wonderful Brush Gallery and becomes a security guard. There, he meets his senior sister Qian Muzi, second senior brother Shui Miaomiao, third senior brother Huo Yanyan, and other companions. Together, they enjoy a delightfully whimsical life, unaware that an evil force is drawing ever closer.