One of the neighborhood kids is a local menace. Ryota reveals that he may be in a gang run by his grandfather. When Ryoma's team investigates, they discover that the boy is a product of his grandfather's twisted teachings. However, there may be more to this gang than meets the eye. What will Winspector do when the destructive power of the GigaStreamer is stolen and will the fate of the Evil Deed a Day Boy end in tragedy?