우진은 PPL로 제공된 통밀빵을 먹고, 갑작스러운 호흡곤란으로 쓰러진다. 우진이 자신과 같은 알레르기를 가지고 있다는 사실을 알게 된 정인은, 유전자 검사 결과를 의심하기 시작한다.
Woo-jin eats a piece of whole wheat bread used in production as product placement and collapses with breathing complications. After learning of Woo-jin's peanut allergy, Jeong-in begins to doubt the DNA test results between him and attempts to find out more. Meanwhile, Sun-ae reminds Jeong-in of the collateral she has with her investment.
