The film tells the story of the timid Roger slowly regaining his confidence and self-esteem.

Roger, who lacks self-confidence and is prone to anxiety, is an unlucky person in his ordinary life, which makes Roger very upset. In order to change the status quo, Roger joined a highly confidential self-confidence training school. Dr. Fox P is a teacher in this school. With the help of Lesher, a teaching assistant, Dr. P often uses some extremely dangerous and unconventional means to teach. Of course, Dr. P has his promise: "Exercise your self-confidence in my way, and the wild side of your sleeping lion will soon appear."

All the students who came to this school for training were "problem students": Walsh, who left her mother's basement as if she saw the end of the world, Diego, who was extremely afraid of her wife, and Ellie, who could not get along with her female colleagues normally. In the eyes of these people, Roger who dares to date his dream lover Amanda is a confident "successful person". As a result, Roger, who was extremely unconfident, had every reason to be the boss.

But it wasn't long before Roger found out that Dr. P had actually started to interfere in his life. Roger exploded when he learned that the doctor had really attacked his favorite Amanda. For the sake of his sweetheart, angry Roger and his new friend made a secret attempt with conspiracy and launched an anti-Japanese war with the doctor ...? [ 1]?