The girl group, MYSTERY, which has remained unpopular even after three years together, suddenly announces their separation on their third anniversary. The first team, known for its sexy and fiery style, is led by the original captain, Windy. However, the new captain, Wang Shu, with her sweet and lively image, has been appointed unexpectedly. Wang Shu appears to be obedient and sensible, always clinging onto Windy, but it seems she harbors special feelings for this "jiejie"...