BACKSTORY
Meaning of BACKSTORY in English
/ ˈbækstɔːri; NAmE / noun
( pl. -ies ) the things that are supposed to have happened before the events in a film / movie, novel, etc.
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005