Zhang Zhiheng (played by Nick Cheung), an accountant of a certain group, was deceived by Fei Wei to make false accounts, causing the company to lose more than 10 million. Afterwards, Fei Wei fled, and Zhiheng was prosecuted by the Commercial Investigation Department and imprisoned for 9 months. His boss's wife died of illness due to lack of money. The 9-month prison disaster made Zhiheng suffer from bullying and humiliation, but he also met Chen Shisi (played by Wang Jing), a master of swindling. Zhiheng was impressed by his gambling skills and swindling techniques, so he worshipped him as his teacher. Chen Shisi just needed a partner to deal with the Dragon King (played by Cheung Siu Fai) who framed him, and the two hit it off. Zhiheng is talented and has learned the true teachings of Shisi. After they were released from prison, they first punished the female swindler who deceived Shisi that year, and then set their sights on the Dragon King. In the process, Zhiheng accidentally discovered that Shisi actually intended to use him as a scapegoat. The scam against the Dragon King was launched immediately, and there was almost no boundary between deceiving and being deceived...