Junwon is a perfectly ordinary office worker who values routine and predictability above all else. Because of this, he finds himself constantly aggravated by Yijae, a fellow colleague who joined the company at the exact same time. From their work ethics to their basic personalities, Yijae is the complete polar opposite of Junwon, making his very presence a daily source of intense frustration.

One particular afternoon, the simmering tension between them boils over during a heated argument over a minor project detail. After a fierce clash of opinions, they are pressured by their peers to mend fences. Reluctantly, Junwon reaches out to shake Yijae's hand as a superficial gesture of peace. However, the moment their palms meet, a sudden, electric jolt shoots up Junwon's arm, leaving his mind completely racing in shock. What on earth was that sensation just now?