The 5-star Hotel Brenners is the epitome of luxury in Baden-Baden. For more than 150 years, wealthy guests, stars, and starlets have been checking in here. But now the hotel has a lot at stake. The Brenner is currently undergoing the most extensive renovation in its history: after two years of extensive refurbishment and renovation, it is now set to reopen. The documentary “Five-Star Construction Site” follows the Brenner’s staff on their journey back to the forefront of international luxury.