Farewell Party is about the experiences of five close friends who organise a bachelorette party for their friends who are getting married.

Hulya, Mehtap, Didem and Arzu decide to organise a surprise bachelorette party for their soon-to-be-married friend Yonca.

For this purpose, Hulya asks her husband Ibrahim, the president of a political party, to rent a villa with a pool.

When the group arrange everything and go to the villa they rented, they encounter the fantasy-filled world of the villa owner Acelya.

Surprised by what they see in the house full of pink decor and furniture, the friends almost forget about the party and start going through Acelya's belongings.

The fun night of the group leaves its place to excitement when they find a locked room.

The girls, who have a pleasant time all night, wake up with a big shock in the morning.