1x2 - Cleaning Up

Yong-mi discovers a side of Suja he shouldn't have seen! However, for some reason, Soo-ja behaves differently from Yong-mi's expectations, and Yong-mi and In-kyung use the information they obtained after the twists and turns to invest in stocks for the first time in their lives. Meanwhile, Taekyung detects a strange sound coming from inside the ventilator...!