"Kilas" (a Portuguese misrepresentation of the English word "killers") is the nickname of a petty con-man who gets involved with a deadly ring of spies.

Ana is a young Portuguese girl who lives with her grandmother. Through their relationship, we are witness to the Cycle of Life: Grandmother takes care of granddaughter until granddaughter is obliged to do same for grandmother. The scenes between the two protagonists are counterpointed with impressionistic camera compositions based upon famous religious paintings.

Lúcia is a lawyer that works to help women whose the father of the relationship deny the paternity. A job she is very keen about since she doesn't know who her father is.