Stephen Hawking Biopic, the __ Everything

This page is the CodyCross answer for the clue below from Street Fair, Group 1304, Puzzle 5 (Stay Hydrated).

Question is: Stephen Hawking Biopic, the __ Everything

and the answer is: THEORYOF

Word Meaning:

THEORY — A description of an event or system that is considered to be accurate.

Definitions from Wiktionary.