The Kardashians are back! The famous TV family returns for season 5 of their Hulu reality series and Kim Kardashian is sending out an 'S.O.S..' In the new trailer, the beauty mogul is at odds with her younger sister, Khloé, whom she calls 'unbearable' and 'judgmental.' Meanwhile, Khloé's backing herself up and says sisters can be 'brutal' and 'vicious.' In the new season, fans will also see how Kourtney Kardashian's medical emergency went down amid her pregnancy with her and her husband, Travis Barker's, baby boy. 'The Kardashians' season 5 premieres May 23 on Hulu.