Starts with a couple enjoying perfect couple life, the cheesy Korean version of it anyway. But after some suspicions, she hires a PI to watch her husband. Turns out in a day he meets with 3 or 4 women, has been widowed 3 times already... but also go to mysterious private clubs, drinks 42 bottle of strong liquor for breakfast and also drinks gasoline directly from the pump.

Follows a series of unlikely events where he tries to kill her, her and her friends try to kill him, the PI dies, but not really, several times, they get arrested by the cops, etc. Like a vaudeville comedy. A lot of "no there's nobody in the bathroom", "no these people are not dead", "no I didn't try to kill you", etc.

The title actually comes from there. They try to kill each other (or accidentally do it) but in the end people keep not dying. This is not a zombie flick.

It's funny in the beginning, there's a good concept, funny situations. But as the situations pile up over and over it gets a bit boring and repetitive and you're just waiting for it to end. Not sure why it feels this repetitive when it's a pretty classic comedy schema but it just stops functioning at about half the movie.

End scene is pretty weird as it's supposed to be one year later and the friend is all surprised she her boyfriend gets there. So what ? She never checked on him for a whole year ? After all he's been through?