The story begins when our main character Mugi makes her way to Hammerlocke to challenge the eight and final gym leader. She has prepared her whole life for this moment. However when she enters the gym, the leader who she has to face is her childhood friend Raihan who had moved away when they were younger. Their relationship fell apart and they hadn't spoken in years. The pair are shocked to see each other and Mugi finds herself beginning to fall in love with the boy who saved her life.