Unit 2 of the StB receive information from their Polish counterparts on a suspicious Indonesian diplomat. He is to be stationed in the Indonesian Embassy in Warsaw but flew early and is headed towards Prague instead. He was seen to be carrying a nondescript box. Agent Tomáš of the StB is assigned to stalk him and find out why he decided to go to Prague.

Vitek, a troubled young man, seeks out his younger brother Josef (Pepa) who is a well-adjusted adoptee with a stable home life—for help. Over the course of a single day, their reunion spirals from dark humor to deep confrontation, exposing buried traumas, fractured family bonds, and the unspoken love between siblings raised in different worlds.