On the day he was selected by the system, 17-year-old Li Xie was holding a ruined book in the hospital corridor, just like his own life, which was completely rotten. The defective product system promises to release health points after completing the task to restore Li Xie's health. When she traveled to the magical world of the Middle Ages, she was forced to become the "divine mentor" of two crazy cubs. The left hand is a gloomy wolf cub with thorns burning on its neck, and the right hand is a broken rose with poison ivy growing in its blood. Li Xie used college entrance examination mathematics to teach them how to break the holy light array and use chemical formulas to solve black magic.
She taught the young duke to weave auxiliary lines with thorns, and taught the noble girl to draw parabolas with poisonous blood.
But when Li Xie succeeded and retired, the system unexpectedly discovered that his host was missing, nowhere to be found.
"Where's my host that's as big as me?"
What will Li Xie's final choice be?