Private detective Germán Areta el Piojo gets a terminally ill client who wishes to see his long lost, runaway daughter before he dies.

Private detective Germán Areta el Piojo investigates the life of a gay man who has apparently abandoned his partner. When they both turn up dead, it seems one killed the other before committing suicide, but Areta is not convinced.

Madrid, Spain, 1975; shortly after the end of the Franco dictatorship. Six months after the mysterious death of his lover, a prestigious tailor, a married woman visits the office of the young Germán Areta, a former police officer turned private detective, to request his professional services.