I've always been confused by 'Empire' because it always seemed like it was some sort of TV sequel to 'Hustle and Flow,' but I could never figure out if it was one. That's on me for not doing even the most basic research, but what can you do? I can't know about EVERY show. It's safe to say that 'Empire' is a massive hit though, and although its hit a story lull, the characters are so top notch that it's still worth watching.
If this is your first time watching the series, it may be a bit much to get into. There are other, better shows to go back and binge watch, so I might not even suggest that. For long standing fans of the show, of course you'll be tuning you. You have to get your cookie fix.