While the youngsters decide to spruce up the messy rooms of the dormitory to make them more homely, Andri and his pregnant girlfriend play house in the dorm's private room. It's Tibu's birthday, he turns 17. How to elegantly lift a 120-kilogram friend up to 17 times? An uninvited guest to the birthday party is Andri's underage but intoxicated girlfriend Kätlin, who embarrasses herself and Andri. Vika's secret from the past surfaces. The most attended class at school turns out to be the sex education class, which creates a lot of excitement.