Determined to bounce back from an underwhelming first evaluation, the band take on a dance challenge 555 metres in the air and perform live for the first time in front of an audience. In this episode, the group comes to terms with the reality of being in the toughest boy band bootcamp in the world. After a poor assessment by head of training and casting Hee Jun Yoon, the boys discuss the fallout and what they need to do to improve. But band member James is beset by medical issues, first a bad knee and then a bout of tonsillitis. Between intense vocal training and choreography, the band meet up with K-pop legend Shindong from Super Junior, who sets them a dance challenge at the top of the fifth-tallest building in the world, the Lotte Tower. Will the band make it onto the infamous Sky Walk Bridge? The K-pop Cowboy returns, this time to give the boys a day off at Seoul's largest theme park. This week's song, Solar, is to be performed at the School of Performing Arts, Seoul, in front of 500 students. It's the first time the boys have performed in front of a live audience, but one of them is absent — will they pull together and make it as a four-piece? Twenty-four hours later, the boys come face to face with Hee Jun Yoon, SM Entertainment's director of training and casting, who evaluates their school performance. Have they managed to up their game and earn her seal of approval?