This drama tells the story of Anno Koichi (played by Tomazawa Shouming) who accepts the entrustment of the private bank of the president of the Tiangongji Aina Group, a wealthy man with assets of 700 billion, and starts to act towards the initial request, and the story begins. This request is to hope that the president can save his beloved Maruko shop from the predicament. However, Kumiko Iida (played by Honami Suzuki), the president of the dango store, was deceived by investment fraud because she had no financial knowledge at all and was saddled with a lot of debts when the survival of the store was threatened! Faced with Kumiko, who is standing in the abyss of despair, Anno proposes a proposal... And with this incident as a beginning, Anno, as the private banker of the president of Tiangongji, began to face various problems involved in the Tiangongji family.
Japanese