And yeah, there's some pretty explicit sex in it. But it's a shame that's getting all the buzz, because it's actually a pretty compelling espionage thriller about a band of resistance fighters opposing the collaborationist government during the Japanese occupation in 1942. Specifically, Wang Jiazhi (Wei Tang) tries to seduce a government official Mr. Yee (Tony Leung), spy on him, and eventually lure him into position for assassination. But the seduction is a little too real for everyone, and that's where all the explicit sex comes in.
In many ways, it's a Pacific Theater companion piece to the also excellent "Black Book" (and both feature quite a bit of sex).