After losing her laundry store to a fire incident, a single mom Duk-hee receives a call from a bank offering a generous upfront loan so she takes it right away. But soon after, she finds out that she has become a victim of a voice phishing scheme. Devastated, Duk-hee turns to the police for help, only to be more disappointed that there is no hope of retrieving her money. At the moment of despair, Jae-min, the phisher who tricked her, rings her phone once again to tip Duk-hee off about the criminal organization that locked him up and coerced him to make voice phishing calls from China. With that call, Duk-hee makes up her mind to investigate this case for herself and take a plane to China with her friends.

Mal-soon is poor 72-years-old granny and enjoys her single life. One day, Gong-ju and her baby sister appear in front of Mal-soon. Gong-ju introduces herself as Mal-soon's granddaughter. Since then, Mal-soon's peaceful life changes.

Two detectives in need; Myung-deuk looks after gang and takes bribes for his sick daughter; Dong-hyeok helps Myung-deuk to settle his gambling debts. One day they hear an information that Chinese gang is shipping a big amount of cash abroad and decide to steal it for themselves. But things go wrong and they're now chased both by police and Chinese gang.