This is the story of 23-year-old Laura who lives in the largest city in the world and yet feels alone. She also knows the exact date in which she'll die: April 30. What Laura doesn't know is what she'll do from now till then, and thus she enrolls in a group of optimists, which she finds pathetic but fun. In that group she writes a list of 10 things she wants to do before she dies, some that mean a lot and some that are a lot of fun. The first thing on her list is to save a life.

Tomás Tomás is a young yuppie playboy with a string of discarded girlfriends. But when Silvia, the victim of one of his adventures, tries to get revenge by typing "positive" on his AIDS test, Tomás experiences for the first time the realities of love and death.

Mexican feature film

Poor Dionisio finds himself as recipient of the good fortune, but soon he forgets that everything that goes up also has to go down, and that in the depressing nothingness of his town it is easy to die.