With great expertise in radiology, Iori Igarashi eagerly anticipates the chance to work alongside his childhood companion, An Amakasu. When he secures a position at her family's hospital, he is determined to fulfill a childhood promise. Unfortunately, years apart mean that An fails to recognize him, and she is not impressed with his performance. Yet, as they tackle various cases together in the department, An must acknowledge Iori's abilities, and they work together closely to ensure top-class healthcare. Will An eventually recognize that she has been working alongside her childhood friend all along as they slowly adapt to each other?