Duan Qingci, the top student in the city's No. 1 Middle School, hides an unknown identity - a young demon slayer. He is accompanied by the noisy bronze mirror Xi Lu, and the peach wood sword and yellow talisman paper in his palm are sharp weapons. While facing the academic competition on the high school campus and daily companionship with his friend Xu Ji, he silently accepts the commission to eliminate demons and resolve the crises caused by various evil spirits such as Hui Yao, Fei Zong, and Shadow Haunting.
During a trip to an ancient village, Duan Qingci met a fellow traveler on his journey to eliminate demons. Xu Ji wanted to protect others, so he insisted on learning the art of eliminating demons from his master. Since then, the two have been together, studying magic in the mountains and practicing actual combat in the city. From the campus to the countryside, from the small town to the ancient village, they defeated demons and demons all the way. An unexpected encounter in the hospital brings Song Xinian, a gentle medical student, into their lives, adding a different color to this boy's journey of slaying demons.
On the one hand, there are piles of test papers, tense monthly mock tests, and the race against time on campus; on the other hand, there are elusive evil spirits, dangerous demon elimination tasks, and spells that require concentration. Duan Qingci can switch between the two lives in this way. As a young man, with a righteous mind, he slayed evil spirits in the world of fireworks, and kept his original intention in writing and ink. On the road of growth, side by side with his friends, he wrote a chapter of evil elimination that belongs exclusively to young people with his blood and wisdom.
Purpose: Using the dual life of the young demon slayer Duan Qingci as a carrier, the film explores the responsibility and balance, original intention and perseverance in the growth of young people. Through the adventure narrative of the demon slayer, it interprets the core of "Evil spirits all arise from obsession, and a righteous heart is the basis for breaking the situation". It shows that young people guard the fireworks of the world with passion and goodwill, and in the interweaving of studies and missions, self and others, they develop the courage and responsibility unique to youth.