The Grand Prince had a rather boring synopsis that really didn't do it justice. The drama is very intense, with a nice love triangle, tragic characters, action scenes that will keep you entertained till the end, and power conspiracies.
I loved the main couple. They had chemistry and their love story was nice and interesting, even though it started very quickly and it didn't have time to built up. The second lead was an interesting character as well, the opposite of the main lead, dark and violent. I liked how he was the perfect opposition to the love triangle and how tragic his persona was.
The drama did, however, get a bit tiring, with the many many action scenes and twists. But, it was entertaining nevertheless. So, 8 out of 10.