Tonight “Beauty and the Beast” reveals if happily ever after is possible for Vincent and Cat. The two have spent four seasons together fighting evil, but that will all come to an end in Thursday’s series finale. Season 4, episode 13 will serve as the final adventure for Vincent and Cat, but it sounds like the CW drama will pack plenty of trouble into the hour.

1. Sacrifices — According to the synopsis, everyone will be preparing for one last battle in episode 13. “Vincent (Jay Ryan) and Cat (Kristin Kreuk) are willing to make the ultimate sacrifice to stop an attack and rid the world of beast makers once and for all,” the synopsis reveals. The “ultimate sacrifice” doesn’t sound like a happy ending, but just because they’re ready to make that kind of sacrifice doesn’t mean they’ll have to.

2. The Search For Braxton — Part of that final battle obviously includes hunting down Braxton (Marc Singer). He only has one cabal member left to off, the crown prince, and Braxton is planning a major bombing to kill him. Vincent and Cat are determined to stop the villain, and they even take a hostage to do it. Watch them take a big risk in a sneak-peek video on TVLine.

3. Au Revoir — The “Beauty and the Beast” series finale title is “Au Revoir,” the French words for goodbye. Is that goodbye to the fans or will Vincent and Cat be saying farewell in this episode too?

4. Heather’s Hospital Stay — Cat’s little sister (Nicole Gale Anderson) wants to get out of the hospital as soon as possible after getting shot. A sneak-peek video shows just how eager she is to get out, but will Kyle (Michael Roark) help her leave? Watch below:

The “Beauty and the Beast” Season 4 finale, which is also the series finale, airs at 9 p.m. EDT on The CW.