Eggsy is a young man with a very high IQ. He could become everything he wanted, but he decided to become a petty criminal. One day he meets Harry Hart, who was saved by Eggsy’s father in the past. This man decides to do everything possible to improve Eggsy’s life and open new opportunities. Harry tells him that he is a secret agent working for an independent organization that wants to protect the whole world. He suggested him to pass the training and become one of them. The boy accepts Harry’s offer, but can he pass all the challenges and equal his hopes?