Tong Song lost his legs in a car accident, An Ning, a technical consultant, and Liang Meng, a safety consultant, partner to start a bodyguard company. Unexpectedly, the first mission of the bodyguard team encounters many accidents.

Where is home? For a group of Chinese students studying and working in Tokyo, it might be the Nankokute restaurant whose manager has been in Japan for years without ever managing to obtain a residence permit. The cook left his family in China and hasn't yet managed to have them brought over to join him and one waiter's father is sick while the other's is a violent alcoholic. An engaging fresco of everyday life with touching moments and an authentic, natural atmosphere.

Tong Song, who is unable to walk, is the founder of Paradox Security. There are two other people in the team, An Ning, who is talented in mechanics, and Da Niu, who is simple-minded yet highly skilled. The company's main business is to protect the safety of their clients and their clients' property, also known as "bodyguards." On this day, they received a three-day anonymous commission to protect An Ning's sister, An Yi. Since then, An Yi has had ran into many accidents. Tong Song thinks it's not a coincidence, but he does find a clue in the details that confirms his suspicions. There is a high possibility that the organization behind this is one that is good at making murders look like accidents. Just then, An Yi disappears... Who is trying to assassinate An Yi? Is An Yi aware of the danger she's in? Is there really such an organization? How will Tong Song and the others save An Yi?