When aspiring nurse Yumi reports to the academy for her initial shift, she quickly learns that her education will involve hands-on demonstrations unlike any she has imagined. The facility's doctors and fellow nurses provide thorough guidance, helping her master techniques through active participation. As the lessons progress, Yumi experiences a whirlwind of new sensations that challenge her composure. Ultimately, this first encounter sets the stage for an unforgettable journey of growth and discovery.