In a certain corner of the world, the underground empire group SSSSS issued a wanted order, and the target person was Qingfeng, a dragon national agent code-named X.Her real name is Shen Yu, and she holds top-secret information within the group.A well-planned escape forced SSSSS to offer a reward of one billion and pursue this mysterious female agent around the world.

Shen Yu is not only an agent, but also a mother.In the underground boxing ring, her son Chen Long won the game with outstanding performance.Before the joy of victory dissipated, Shen Yu's figure appeared in the crowd and brought his son a steaming meal.She didn't want Chen Long to call her Mom. She was afraid that her son would see this side of her - a wanted mother, a woman hiding in the darkness.

Shen Yu's husband turned out to be the legendary Dragon King. The two of them were called Mr. and Mrs. Smith% by the outside world, and they lived a hidden life in the shadows.However, the tracking ability of SSSSS was beyond imagination. They found Shen Yu's family and threatened Chen Long's life to force the couple to hand over top-secret information.

Faced with the choice of life and death, Shen Yu and Long Wang decided not to escape.They must find the mastermind and expose the conspiracy behind it all.However, the road has not been smooth.The masterminds behind the scenes are still chasing them, and every escape is full of unknowns and dangers.

The three embarked on a road full of thorns. Not only did they have to face the pursuit of SSSSS, but they also had to battle wits and courage with the mastermind behind the scenes.Where should they go on this road?Should he continue to flee, or bravely expose the truth?