An imperial agent gets ridiculed for his various inventions, until his supportive wife encourages him to attend a conference, which's actually a trap to kill all the doctors serving the emperor, where his crazy inventions come in handy.

"He is the law! what law?"

Credits

Vincent Kok Tak-ChiuDirector

Stephen ChowLing Ling Fat

Carina LauLing Kar Ting

Carman Lee Yeuk-TungKam Tso

Cheung Tat-MingEmperor