Mawaru-Penguindrum - Season 1 (2011)

Ringo schemes to have everything in place for the perfect afternoon with Tabuki. Unfortunately, nothing goes the way she plans.

Shoma invites Ringo to his house, and tells her everything outright. This leads to Ringo disposing of Himari's hat, and Kanba starts a desperate search to get it back.

When Kanba is summoned to a meeting with several of his ex-girlfriends, they are attacked by a mysterious sniper. Meanwhile, Shoma helps Ringo move to her new home under Tabuki's apartment.

Ringo and Shoma attend one of Yuri's plays. Afterwards, they are invited to a party, where Yuri makes a shocking announcement.

With Ringo's planned 'first-night' with Tabuki failing to eventuate, the destiny she had desired seems to be slipping away from her. In a last ditch effort to bring 'Project M' to fruition, she concocts a cunning plan.

Himari has a strange dream in which she encounters a mysterious librarian named Sanetoshi, who tends to a library apparently housing her memories.

Shoma is visited by Ringo and his siblings as he recovers in hospital. After he is kidnapped by Masako, Kanba's attempt to rescue him leads him into a surreal labyrinth.

Kanba confronts Masako in an attempt to obtain Ringo's diary. Ringo decides to continue Project M, with or without her diary and Shoma's assistance.

As Himari suddenly loses her strength, Shoma remembers how the Takakura parents carried out a terrorist attack that killed Ringo's sister Momoka.

Just as Kanba gives in to despair, Sanetoshi appears to him with an offer he cannot refuse.

When Shouma leaves Ringo distraught by deciding the two should not see each other anymore, Yuri offers to help her get over him with a visit to a hot-spring resort.

Yuri uses Ringo to capture Shoma and force him to get Himari's diary, so she can bring back the only friend she ever had in a troubled life - Momoka.

After a battle with Yuri, Masako thinks back to her life - the tyrannical tycoon grandfather who raised her, and the numerous murders she attempted to be rid of him.

Yuri and Masako battle over Ringo's diary, while Tabuki takes Himari hostage to get revenge on the children of Takakura for the death of Momoka.

Tabuki remembers how Momoka saved his life as a child. Kanba and Shoma arrive and have a standoff with Tabuki.

Masako appears incognito and revives suppressed memories within Himari, showing her she is adopted and who her true soulmate is.

Shoma tells Ringo how, when the Takakuras were out to change the world, they took in an orphan girl named Himari.

After an encounter with a journalist, Himari makes a shocking discovery about Kanba's parents, and swears to save Kanba. Tabuki and Yuri are attacked.

Kanba goes ahead with his plan to save Himari no matter what it might cost, despite Himari and Masako's appeals. Yuri returns Momoka's diary to Ringo.

Finally Shoma comes head to head with Kanba, determined to stop him.

The Penguindrum is finally revealed, and Himari and Ringo are saved... but at what cost?