Today is the payday of Dream Flower Service where Shiratori Sakuto (Yamashita Tomohisa) is working. President Takebe's (Hagiwara Masato) policy every month is to hand the salary of Yanagawa (Kubota Masataka), Hiyama (Kudo Asuka) and every employee as cash. As Sakuto receives his salary with a smile, Hiyama inquires, "What will you buy?", Sakuto answers, "I will become smart* and take my license." At that time, Yanagawa's mom, Kyoko (Tanaka Minako) visits Dream Flower Service. After Kyoko greets President Takebe, Yanagawa hands over to her the salary he has just received. As Sakuto and Hiyama has seen the exchange, Yanagawa couldn't hide his embarrassment over the situation. On the other hand, in the research on making improvements in intellectual advancement, Hachisuka (Ishimaru Kanji) and his research team who had successful results on the experiment using the mouse Algernon, now wants to step up by doing the clinical study to a human body but haven't found a test subject yet. However, one day, as Haruka (Kuriyama Chiaki) wants to help Hachisuka advance in his research, she reports about Sakuto to him. Thus visits Dream Flower Service and lowers her head to Takebe seeking his cooperation for Sakuto to be a test subject. That day too, being contacted by Rio (Tanimura Mizuki) and Mai (Omasa Aya), Sakuto, Yanagawa and Hiyama are unexpectedly on a date at the amusement park...