A deadly outbreak affects the south of the country, so the police and and health authorities sends three young doctors to vaccinate people across the region and teach preventive health measures. When they reach a village called Aquazul, the population is mysteriously apprehensive and even the town doctor warns them not to try to vaccinate the inhabitants, but the doctors insist. Thus begins a series of strange events--extraordinary phenomena outside reality, all related to a famous "boy" who confronts his rigid scientific arguments against the possibilities of faith.