adv. phr. , informal That which is important; that which is at the forefront of on-going social, personal, or scientific undertakings. Young, talented and black, that's where it's at. We send sophisticated machines to Mars instead of people, that's where it's at.
WHERE IT'S AT
Meaning of WHERE IT'S AT in English
American idioms English vocabulary. Английский словарь американских идиом. 2012