Aware of the dire consequences of getting too close for too long, Dong-jin plunges into the river in a desperate attempt to save himself. However, Mi-jung recognises him, intensifying the danger he's already in. As he recovers in the hospital, Dong-jin turns to Producer Heo, seeking her help to identify a key variable in his hypothesis that might hold the solution he is desperately searching for.

Joong-hyuk reveals Dong-jin's work to Park Mi-jung, unveiling the deeper motivations behind it. As he uncovers that Dong-jin's analysis contains subtle references to him, Joong-hyuk begins to apply Dong-jin's rules to his own life, growing increasingly close to Eun-sil. Meanwhile, in a distant country, Dong-jin patiently waits for Mi-jung, holding onto the words he has long kept hidden, eager to finally speak them aloud.