Ikki Isaku, a young boy that study in a vocational school majoring in culinary, is back to his hometown for summer vacation. When he collecting cooking ingredient is a mountain near his town, accidentally he found a cave. An unfortunate event happens when he exploring the cave, he falls into an abyss inside the cave.
When he wakes up, he already in another person body. The body he currently lives in is the body of sole heirs of Baron Harvard, young master Henry Harvard, that due to an incident in his trip, fallen from his horse and lost his consciousness and even his life.
What will Ikki do in his new life as a young master in Harvard castle?