The Dynamo football team from St. Petersburg is holding a week-long training camp in Turkey. In the hotel bar where the football players are staying, the team coach accidentally meets his old acquaintance, the famous crime expert Drongo. Taking this opportunity, he turns to the detective asking for help. Before each important match, goalkeeper Epifantsev appears unwell. In the latter case, the remains of a potent drug were found in the goalkeeper's glass - that is, they tried to poison the goalkeeper. Drongo assumes the machinations of competitors. If the expert knew how wrong he is...