Yin Zaiming is an extremely diligent scholar, but his talent is not outstanding.Although he tried his best and fought to the limit every time, his grades were never ideal.Even though he hired a tutor and participated in many cram schools, his ranking was still hovering among the top three.Yin Zaimin was deeply confused by this and he was eager to go to college.

By chance, Yin Zaimin heard the classmates talking about the possibility of going to college through the special recruitment channels of vocational high school, so he decided to go to Lucheng Vocational High School to find out.However, what he did not know was that a classmate once asserted that no matter what happened, he would never choose Lu Cheng Vocational High School.After entering the school gate, Yin Zaimin decided to concentrate on studying here.He noticed that Kim Se-hyun's eyes were filled with a desire for knowledge.

Yoon Jae-min volunteered to invite Kim Se-hyun to study together, but unexpectedly witnessed a fight.It turned out that Kim Se-hyun had a conflict with his classmate ranked 173 for some reason. Although Kim Se-hyun failed to win and his ranking dropped to 171, Yoon Jae-min was still confused about it.

At this time, the teacher walked into the classroom and announced that the original class teacher had resigned and the new teacher would take over.What surprised Yin Zaimin was that the new class teacher was actually his former tutor Li Zaijing.Lee Zaijing's arrival surprised and curious.When calling the name, Pi Hanyu's impatient behavior and Li Minghao's conflict made the classroom even more chaotic.Yin Zaimin finds Lee Zaijing and asks him why he is here, and is worried that he will leave soon like his former class teacher.Li Zaijing laughed and said that he had just taken office for the first day and could not have resigned so soon.

Li Zaijing found that the oil barrels in the school were used by students as tools for smoking and throwing cigarette butts, so he reported it to the vice principal.The vice principal believed that simply removing the oil barrel would not solve the problem, and encouraged Li Minghao to try to change the status quo himself.However, Lee Jae-kyung decided to move the oil barrels, but the next day he found that they were all released.Yoon Jae-min thought that Kim Se-hyun also had the desire to learn, so he invited him to the reading party, but was politely rejected by Kim Se-hyun.

When Pi Hanyu wanted to cause trouble for Kim Se-hyun, he was stopped by Yoon Jae-min.Yoon Jaemin picked up the fire extinguisher and put on a welding mask to rescue Kim Se-hyun.However, Kim Se-hyun was dissatisfied with the idea that escaping would only make Pi Han-woo even more entangled.Pi Hanyu then found Kim Se-hyun and wanted to commit an offense, but was defeated by Yoon Jae-min.Yin Zaimin believes that a strong body is crucial to learning, so he has been practicing.After Kim Se-hyun returned home, he was opposed by his father and was forced to give up his studies and study welding.He found his lost notes while out.

As Mr. Zhang is about to visit, someone urges Li Zaijing to move out the oil barrel.Yoon Jaemin found Kim Se-hyun’s notes on the table, and his heart was filled with joy.Pi Hanyu suspected that the person who saved Kim Se-hyun yesterday was Yoon Jae-min and wanted to provoke trouble.He burned down Kim Se-hyun's notes, which aroused Yoon Jae-min's anger.Yoon Jaemin beat Pi Hanyu violently and forced him to apologize to Kim Se-hyun.