Two people competing in the same company. Can the bond between them go further than an ambition, although they are neutral to each other? It is a life that will witness the leap of this competition against each other even to the people they are with. What if the two are chosen to make a duet together? Although Yeji and Nayeon are neutral towards each other, this ambition is strong enough to show their feelings to each other. But how seriously are they sensitive to each other for people they'v