The hysterical frenzy over Creamy Mami's debut song evenly divided between people buying the album and converging on the upcoming concert obfuscates that the magical idol is actually Yuu Morisawa effecting the mirage of being infirm -- although she almost blows it at the mention of her favorite dish. Yuu finds that the successful concert at Parthenon Productions as Creamy Mami does her no good against Natsume's zeal to impart her maternal perspective on her subterfuge or the impromptu test for sleeping in class; if those problems are not enough, Toshio's teasing and a collision into Midori costs Yuu her compact right when she is going to need it the most. Yuu's frantic search for the compact gets a big boost from Toshio explaining that Midori at the amusement park has it; while she successfully conquers the high-stakes aerial adventure necessary for its retrieval, Yuu ultimately ends up igniting Megumi's vendetta of Creamy Mami.

Although she should be happy about its effect on the family micro-economy, the diurnal heat and a mob of impatient customers drives Natsume batty as she tries to entreat Tetsuo to take the family on a seashore vacation citing the effect it is having on Yuu who daydreams about swimming in the ocean before Nega snaps her back to reality as he and Posi prosecute an analytical concourse over the logistics and consequences of Yuu taking a vacation from her double life as Creamy Mami -- an incidence of which is that day when she has it explained that she is to conduct a joint concert alongside Megumi as Creamy Mami at Isohama complete with a brand-new high-tech mobile production van; later that evening, Yuu throws a temper tantrum in an attempt to defeat her earlier »gung-ho« exhibition about working while pointing out that Natsume was trying the same thing earlier only to have the annoyed Tetsuo affirm some very decisive family government. The road trip to Isohama the next morning becomes the forum for Yuu to ultimately learn the lesson »Be very careful what you wish for« when Natsume engages Shingo in a dangerous road race en route to the beach; if that is not enough along with the hefty workload of preparing crepes alongside Toshio and Midori without Natsume and Tetsuo to lead them through it, Yuu finds that doing her thing as Creamy Mami takes on a whole new dimension when she has to perform the joint concert not with Megumi but with her magical alter ego.

Yuu recounting a conversation with her father Tetsuo about the stars in the sky and the fable associated with the decennial Dream Comet gives way to a news broadcast about the Dream Comet as Yuu finishes making a crepe for Midori that sets the stage for Yuu to prosecute a divergent concourse regarding the existence of Mr. Dream with Toshio who plans to observe the Comet that night with Midori. Later that evening while staring up at the sky, Yuu explains her childhood prologue with Toshio whose detection of the Dream Comet becomes the forum for Mr. Dream to manifest himself before the astonished Yuu as he explains the adventure ahead of her that night. Yuu's adventure with Mr. Dream begins with some elements of »Alice in Wonderland« that enable Toshio to spot Yuu well enough to give chase after her; while unable to follow Yuu to the dimensional area where the secret clubhouse is located, Toshio's anxiety for Yuu's welfare is a potent deus ex machina that ultimately adds enough elements of »Cinderella« to bring the evening excursion to a conclusion that leaves Yuu feeling satisfied with a healthy perspective of the circumstances; even if the complex logistics of reality do not always work out in her favor, Mr. Dream leaves behind a wonderful consolation prize for Yuu: a Toshio that happily accommodates her childish dreams.