Brief Adventure That's Not Part of the Main Story

This page is the CodyCross answer for the clue below from Prehistory, Group 1251, Puzzle 2 (Huts and Tepees).

Question is: Brief Adventure That's Not Part of the Main Story

and the answer is: SIDEQUEST

Word Meaning:

SIDE QUEST — Alternative form of sidequest.

Definitions from Wiktionary.