Pupils go on a trip to St. Petersburg. The next morning they wake up in the middle of an unknown terrain. The pupils try to find a way out.
| Actor | Role |
|---|---|
| AAleksandr LebedevNot listed | Not listed |
| MMariya PryskinaNot listed | Not listed |
| AAleksandr DrozdovNot listed | Not listed |
| SSergey ChinenovNot listed | Not listed |
| PPavel LukyanovNot listed | Not listed |
| RRamil MubinovNot listed | Not listed |
| MMariya NovichenkoNot listed | Not listed |
| IIrina YankoNot listed | Not listed |
| SSergey KarachevNot listed | Not listed |