The school canteen had always been a slightly dodgy place, but since Mrs Helena started cooking soups with names longer than the class attendance list, the situation has deteriorated badly. It was Friday the 13th, and the menu board read: "Surprise soup with a hint of exotics, Dream chops and Mrs Helena's special jar". The latter sounded particularly threatening. - Who normally calls a dinner a 'Special Jar'? - fukked Olek, standing in line with his friends Zuza and Kuba. Zuza looked suspiciously at the kitchen. - 'My grandmother only keeps pickles in jars or.... well, other suspicious things. But a special one? Kuba was already pulling out his phone, ready to film if something exploded, because after all, viral won't make itself. The canteen was boiling with whispers. Everyone exchanged communicative glances as they watched Mrs Helena pull a jar from behind the till with the look of a secret agency boss. - Hey, look! - whispered Kuba. - This jar... is moving! Olek squatted down. - I swear, if a mutant cucumber pops out of this jar any time soon, I'm switching to sandwiches for life. Suddenly, instead of Mrs Helena, a new cook appeared behind the counter, Mr Wiesiek - a legend of school jokes and memes. Everyone froze. Wiesiek nodded conspiratorially. - Kids! - he said in a whisper. - Today for dessert... a surprise! But we could use your help. Who dares to try it? The gazes of the three met. Zuza bravely reached for the jar, Olek held it by the hood and Kuba was already recording the report. The jar clattered, a murmur passed through the canteen, and the lid began to unscrew slowly....