On a Friday night, Kuba introduces his new acquaintance, Honza, to his longtime friend, Vašek. An ordinary evening at a pub is disrupted by the arrival of a stranger named Emily, who happens to join their group. Everything suddenly changes when Honza, driven by his interest in the newcomer, asks Kuba behind Vašek’s back to help him slip a drug into her drink. Kuba is forced to choose between loyalty to his old friend, the desire not to fall short in Honza's eyes, and his own moral principles, as the fate of the unsuspecting Emily suddenly rests in his hands.