KA YUNG feels unhappy about his weak health and is determined to exercise himself. KA CHING encourages him to do jogging every morning while LUNG takes KUEN CHEUNG, YIM FAN, and KA YUNG to SAU HAU KAI's training centre to exercise their bodies. HAU KAI is attracted to YIM FAN but dares not court her because of his bad breath. LUNG encourages him and arranges the two to meet each other. YIM FAN finally accepts HAU KAI and agrees to get along with him. YIM FAN discovers HAU KAI having bad breath and refuses to meet him again. LUNG and KUEN CHEUNG rebuke her who then realizes her fault and agrees to continue her friendship with HAU KAI. KA YUNG is too rash in bodybuilding and hurts his muscles. KA CHING complains about LUNG's carelessness and further feels discontented with him. In order to get close to KA CHINGy LUNG decides to join her in learning Kendo.