Zhiwen (played by Xu Guanwen) is a TV station's extra. He thinks he is very talented, so he has been depressed. Zhiwen's younger brother Zhixin (played by Xu Guanying) is a talented inventor. He recently invented a laugh bomb machine that can make people laugh. Just when Zhiwen was muddling along, another TV station invited him to be a guest host. Zhiwen was full of confidence and went to the party with his brother's new invention. Zhiwen's hard work and the power of the laugh bomb machine made everyone present laugh, and the effect of the program exceeded expectations. So, the TV station promised a high salary to dig Zhiwen over. Zhiwen also wanted to leave very much, but he had no choice but to sign an 8-year indenture with the original TV station. If he breached the contract, he would bear huge compensation. One night, the two brothers sneaked into the TV station's safe together, trying to steal the indenture back...