Metin, Ali and Feyza are three siblings who grew up in a middle class household, still living with their parents. Tahsin who is a hardcore Beşiktaş fan decides to have three kids and give them the names of the most famous players, Metin, Ali, Feyyaz,  in order to cherish their names until the end of his life. When his third child happens to be a gırl, now he decides to give her the closest possible name to Feyyaz, and he gives her the name Feyza.

Tahsin would send Metin and Ali to apprenticeship at a plumber store in order for them to learn a profession just in case they do not go to school. Metin and Ali in fact began to really like plumbing and they turn out to be plumbers earning just enough income to get by. Feyza who was the only child that he did not send to apprenticeship during the summer time turns out to be the only one graduated from college and she turned out to be the main income source of the household.

Metin and Ali do not contribute to the household income at all but they don’t care much about it either. Because they invent something which they claim would bring “peace and happiness to the whole world”.

At fırst no one takes them seriously because they are only two plumbers. However later on when they prove to everyone that their invention really works, they find themselves in strange situations with people trying to steal, destroy and own the invention.