According to a long-established tradition, ten girlfriends of different ages, social status and income gather once a month for a kind of “bachelorette party,” which in Turkey is called “golden day.” After the next meeting, a series of mysterious deaths begin, which, it would seem, are in no way connected with each other: accidents, strange coincidences... However, detective Kemal and his wife Aishe, who by chance found herself involved in tragic events, understand that all the threads stretch to ill-fated “golden day”, and begin to investigate a series of crimes.