Undaunted by the spanking received from Natsume last night, Yuu steals out of the house early in the morning in order to test her powers as Creamy Mami; while Yuu admires herself as Creamy Mami, Nega and Posi get into a divergent concourse over who is to blame for Yuu successfully sneaking away when Mami decides to drop in for a visit to see if Tetsuo and Natsume can recognize her before flirting with Toshio as she leaves. Meanwhile, Shingo Tachibana is dismayed to have it explained that Megumi Ayase and her manager Hayato Kidokoro are stuck in traffic along with finding that he has to resolve all the office politics caused by such a development until he encounters Mami walking around; a whirlwind of customization and instruction later, Creamy Mami is enjoined for a song whose lyrics the host withholds from her. Even if Creamy Mami successfully improvises a song and escapes the stampede of her newfound fans, Yuu is still stuck with a lengthy home commute whose resolution ultimately requires Toshio as a deus ex machina -- after Creamy Mami admonishes Toshio to behave dignity and respect unto Yuu.

Toshio's efforts to temper Midori's expectations of spending time with Yuu obfuscate the fact that Yuu herself is grappling with the disadvantages of being Creamy Mami -- the greatest of which is the narcissistic and fanatical Shingo Tachibana hell-bent on making Mami a star with his company as he orders his staff to find her. The panic Yuu is driven into at the sight of Toshio explaining Shingo his recent encounters with Creamy Mami while Midori tries to steal lustful glances at her illustrates the immense contention that Yuu undergoes as she tries to keep her double life as Creamy Mami a secret although Tetsuo and Natsume are picking up some piecemeal clues; nevertheless, Yuu unwisely decides to »debut« before Toshio so that she can explain things and nudge him toward the rest of his life but is shocked to find that Shingo has other ideas and is not taking no for an answer. Facing the backdrop of Shingo and Megumi ultimately having made the choice for her, Creamy Mami begins her career at Parthenon Productions in earnest.

Parthenon Productions receiving a heartfelt letter from a boy named Kenji facing a surgery that could prove just as deadly as the disease it is meant to treat tugs on Hayato's heartstrings while Shingo sees it as a professional opportunity as he charges Hayato a schedule change for Creamy Mami. The convoy of news vans provides Kenji the perfect excuse to go investigate the hullabaloo with his derisive neighbors; while Yuu tries to give her swim coach the slip after Midori intercedes for her, the actual situation is demonstrated to be somewhat more complex than meets the eye when it turns out that it is Kenji's yakuza grandfather Tamegoro Zenigami that needs the pep talk. Shingo and Hayato have quite the imbroglio on their hands: it is a public relations disaster if it is argued they have ties to the yakuza and also if they spurn a young boy's entreaty for assistance because of what he was born into. While the mirage Creamy Mami leads Kenji and Shingo through takes care of the other reporters, the tabloid reporter known as Snake Joe is not so easily dispatched. Snake Joe's attempt to pervert Creamy Mami's humanitarian compassion to his professional advantage becomes the forum for Kenji's former detractors to ultimately show their true colors after Mami asserts her innocence; a telekinetic juggling act from Posi and Nega instigates Snake Joe's retreat and Tamegoro's successful recovery.

Even though he has royal responsibilities that take precedence over it by far, the prince Ayumi exerts a great effort to reconnect with his childhood friend Toshio who is practicing his soccer skills with Midori when Yuu arrives wanting to join in; Yuu is not as practiced in soccer as Toshio and loses control of the ball. Toshio's ball now in hand, Yuu encountering Ayumi sets the stage for a sequence of reminiscing before the sentries force the kids into a hasty retreat. Now at the wrecked ship, Yuu happily runs around exploring the ship with Midori on her heels before deciding to search for the treasure in earnest; things go sour when Midori inadvertently knocks the ship loose from its resting place where the waves can easily capsize it. Yuu finds Ayumi's treasure but is ultimately forced to forego it to save everybody as Creamy Mami when the ship begins sinking; as far as Ayumi is concerned, the opportunity to spend time with Yuu and Toshio is a far greater treasure than the gold statue he had intended for her.