S15, E13: Great chefs need to become great teachers. After a surprise visit from their loved ones, the remaining six chefs are quickly thrown into a challenge in which they must properly execute Chef Ramsay’s Branzino dish. During the challenge, the chefs will be forced to wear a straitjacket while instructing their loved ones on how to successfully complete the signature dish. The pair with the winning dish will be rewarded with a luxurious day at the Burke Williams Spa for their entire team. The losing team will spend their day cleaning the entire dormitory. Later, during the dinner service, HELL’S KITCHEN welcomes special guests, Grammy Award winner Lil Jon, television star Cesar Millan, DJ Steve Aoki and singer Katy Tiz. It’s a race, and the first team to complete service will win the night and receive black jackets.