In order to save Rina, Rio has to guess which hand King will have a coin in after he flips it, not made easy by Rio's fatigue and King's history as a con artist. However, Rio sees through his strategy of destroying the coin, and picks one a hand that's guaranteed to be empty. However, Rina disappears again. Meanwhile, Jack hacks into the systems using a videogame-like controller to try to take control of the flight system. Despite being told to rest, Rio goes to search for Rina, and is shocked to discover she is a Gate Holder working under Cartia, who is revealed to be her aunt. Rina claims to be seeking revenge against Rio's mother, Risa Rollins, for allegedly seducing her father and convincing him to leave her weak mother, who fell into a coma out of shock, revealing they are blood-related. A Gate Battle takes place in a game of poker, where Rina's superior Roll Ruler abilities win against Rio, who falls unconscious.
ジャックの協力を得て、スカイリゾートのコントロールを取り戻すべく、奮闘するミントとリンダたち。一方のリオは、カルティアが放った3番目の刺客・キングとの対決に挑む。力自慢のキングが提案してきた勝負は「コイン当て」。シンプル極まりない勝負だが、そこには巧妙な罠が張り巡らされていた……。
リナを人質に取られ、窮地に陥ったリオははたして、この勝負に勝てるのか。そしてカルティアが用意する「最後の切り札」とは？
