In the corridors of a bustling hospital, an unusual affliction begins to take hold among the nursing staff. As night falls, the dedicated caregivers find themselves drawn into unexpected encounters with those around them. Amid this chaos, a newly arrived resident doctor arrives to begin his tenure, bringing with him not only professional ambitions but also a growing curiosity about the peculiar events unfolding each evening. His instincts suggest there may be more to this mysterious wave than meets the eye.