Coach of the Sky Swimming Club WAI has designed a special training program for WING, which makes CRYSTAL very jealous. WAI asks WING to throw a stone and see how it goes. He is actually trying to get her to learn how to tumble turn. It is rumored that the Angels’ Swimming Team is splitting up. HAN suspects LOK of spreading the rumor. To rescue the Angels from financial crisis, HAN makes a great effort to recruit students, and LOK offers to help her out. LOK suggests to WING that she should adjust the speed and angle of rotation so as to get a much faster turn. WING keeps practicing but still does not perform as well as CRYSTAL. She also does a lot of exercise trying to build up her muscles. TAK points out that the tumble turn designed by WAI is not suitable for WING. He tries to get WING to learn a tumble turn that he has invented – the ‘Ice-breaker Tumble Turn’, but in vain……