Shenanigans reign supreme in China's imperial court when Royal Dog (Louis Koo), a bodyguard who would rather dream up outlandish inventions than practice his kung fu, uncovers a series of assassination plots revolving around the wicked court eunuch. As Royal Dog confronts a gender-bending killer and other murderers, he also becomes a reluctant suitor of the royal princess. Jing Wong directs this kung fu comedy that also stars Barbie Hsu.