Taiichi, who is into the sex industry, invites his friend Ataru to a soapland. Moreover, there's currently a 4P campaign going on, making the prices incredibly cheap, which delighted Taiichi. However, standing before the two were their respective mothers. The two stood there in disbelief, but they ended up being captivated by the supreme soap techniques performed by their mothers, who had transformed into bubble princesses.
