The new swimming instructor is met with jealousy by the students and the PE teacher. The students of the boisterous school decide to play this new teacher the infuriating pranks they do to the other new teachers.

Yeliz leads a happy life with her brother Ahmet, who she is very fond of. But Ahmet Deniz falls in love, and he makes her a marriage proposal, Yeliz's world collapsed. They think, "oh, I get them well apart, as I also did it with all his previous girlfriends." Yeliz begins to make plans with her group of girlfriends to drive the two apart. On the one hand Yeliz, on the other hand, Ahmet Deniz, who tries to protect Deniz against the snares of his sister, without leaving marks Deniz. There awaits all sorts of comic adventures ...