When we see a man vomiting blood in the beginning, we expect the film to be a horror story. However, as the two naive men begin their journey, what we find is a simple buddy movie. With the introduction of a child, the story seems like a family drama. The story seems to end up in a melodrama, only to be followed by a counterattack in black comedy style. Sick guides us through a complex labyrinth of diverse genres. [JUNG Han-seok]