This is the 15050th most frequent Turkish word.
serüvenini
"Serüvenini" means "his/her/its adventure" in English.
The word 'serüvenini' is used here to refer to the adventure (accusative form) of a specific hero.
Ali, kitapta anlatılan kahramanın serüvenini çok beğendi.
Ali really liked the adventure of the hero described in the book.
In this sentence, 'serüvenini' is used to denote the adventure (accusative form) of one's life.
Sanatçı, hayatının serüvenini bir tabloya aktardı.
The artist transformed the adventure of their life into a painting.
Here, 'serüvenini' refers to the adventure (accusative form) of the world as explored in a documentary.