Shindig - S1.E4

Inara Serra is hired by Atherton Wing, one of her regular clients, and accompanies him to a formal dance. Badger hires Mal to meet a contact at the same dance and try to set up a smuggling job. When Mal hits Atherton for the way he treats Inara, Mal finds he has unknowingly challenged Atherton to a duel with swords. Atherton is a skilled swordsman and duelist. Inara tries to teach Mal how to use a sword overnight.