"No matter what, you just have to raise your level of mind.
"Whether it excites you or makes you jealous."

After witnessing Minwoo and Lime kissing, Soo-ae tells Minwoo that they want to break up, and through a series of events, Eunhyuk and Soo-ae forget their initial uncomfortable feelings and gradually open up to each other.
Meanwhile, Soo-ae learns that the strange flip phone she received shows the amount of love each person can receive in their lifetime, and that her own amount of love is 0.
Su-ae, who will die if she cannot raise her mind.
In order to raise her mood, she decides to attack Minwoo and starts a counter-tactic with Eunhyuk to make Minwoo jealous.