A story of how Im Nayeon and Yoo Jeongyeon became childhood rivals turned school rivals turned 'there-is-so-much-ual-tension' rivals turned crushes turned frienemies turned lovers during their time in Hogwarts. Also a story of how Nayeon and Jeongyeon's rivalry (indirectly) brough 7 girls together because dear Merlin pls make them stop.

Or another summary will be Park Jihyo trying to diffuse the tension because she knows these two dorks love each other but their egos are more important than their feelings while the rest of are sighing in frustration.