1994 年，墨西哥总统候选人路易斯·唐纳多·科洛西奥遇刺身亡。他那时日不多的遗孀不惜和时间赛跑也要查出凶手。根据真实事件改编。

An estranged brother and sister reunite at their father's funeral and make a spur of the moment decision to fulfill their childhood dream of driving across Mexico on their old motorbikes.

Mexico at the beginning of the 20th century: one night the monks of the San Francisco Abbey find a baby in front of their gate. They call the boy Marcelino and take care of the little one with devotion...

After they're arrested, the horrific crimes of two serial killers are revealed via confiscated videotapes. These tapes contain brutal murders displaying pure human wickedness, the background, paraphilias and psyche of these murderers.