RWBY Volume 3 Episode 4 Lessons Learned Episode Title:Lessons Learned.Episode Description:Emerald and Mercury easily defeat Coco and Yatsuhashi in their fight. Afterwards, Qrow is suspicious about the fact that violence and crime in Vale stopped after Torchwick's arrest and warns Ruby and Yang that danger is imminent. At the same time, Winter trains Weiss on developing her summoning ability. As Weiss and Winter part ways, both are unaware that Weiss summoned a small white sword.