Elna goes around the school building unscrewing light bulbs. She replaces stronger ones with weaker bulbs and sells the better ones at the market to feed her son Ennu and his girlfriend Leena. One day, Ennu informs her that she is no longer needed.
| Actor | Role |
|---|---|
 Anne TürnpuElna | Elna |
 Margus PrangelRaivo | Raivo |
 Liina VahtrikVirve Viisnurk | Virve Viisnurk |
 Indrek SpunginLightbulb Buyer | Lightbulb Buyer |
 Jarmo RehaEnnu | Ennu |
 Kärt KokkotaLeena | Leena |
 Karl LaumetsOlle | Olle |
 Rednar AnnusArno | Arno |
 Ingmar JõelaProfessor | Professor |
| PPiret Neihaus-SpunginAnželika | Anželika |