Lin Xiao, a delivery boy, was so unlucky that a strange crack opened in the corner of his rental house, and he was "summoned" to the Holy Demon Continent by an experimental accident of two unreliable magic old men. These two old men were blaming each other for the failure of the experiment. Lin Xiao became a "high-value unknown sample" and will always be studied even if he cannot return. In order to protect himself, Lin Xiao took the initiative to learn magic and become a "jointly cultivated experimental subject". From then on, Lin Xiao, while chewing hard cakes, embarked on a wonderful journey to another world amidst the bickering of the two teachers.
