Kyosuke Kano has lived under the shadow of his successful brother Seisuke all his life who is a professional soccer player.

Misaki Ayuzawa is the first female student council president at a once all-boys school turned co-ed. She rules the school with strict discipline demeanor. But she has a secret—she works at a maid cafe due to her families circumstances. One day the popular A-student and notorious heart breaker Takumi Usui finds out her secret and makes a deal with her to keep it hush from the school in exchange for spending some time with him.

Monkey Typhoon tells the story of three asobots —a form of robots whose general title is a portmanteau of the words association and robot— Goku, Tongo, and Joe. They are assisted in their journeys by Sanzo, a human, the son of the creator of the asobots, and Suzie, who joined them after her father was cured from the Destruction Virus. Later on they are joined by their former rivals Miyon and Shiyon. Their quest is to stop their world's destruction by collecting the legendary 49 keys to unlock Tokyo Metropolitan Government. Along the way, the asobots gain the ability to evolve further. Together, in their many voyages, they come across several foes and enemies such as Loki, Ryutaro Demon, the Quartet, King Doberman Pinscher, and many more, as well as grow united in their friendship.

เรื่องราวเกิดขึ้นในปี 2101 เมื่อเจ็ดนักขับ Gyrozetters ต่อสู้เพื่อป้องกันโลกจากการคุกคามของไวรัสคอมพิวเตอร์ที่รู้จักในชื่อ Hekishocker Gyrozetters คือรถที่สามารถแปลงร่างเป็นหุ่นยนต์ได้ เมื่อใช้ Momentum Machine

กล่าวถึงโลกที่มนุษย์จำเป็นต้องอาศัยบนพื้นน้ำทั้งจากปัญหาสภาพอากาศและกองเรือแห่งหมอกที่แข็งแกร่ง เวลาผ่านไป 17 ปี มนุษย์ได้คิดค้นอาวุธที่สามารถสู้กับกองเรือแห่งหมอกได้ แต่ทว่าประเทศญี่ปุ่นที่คิดค้นนั้นไม่มีกำลังพอจะผลิตจำนวนมาก จึงต้องจ้างวาน กุนโซ ผู้ที่ได้ครอบครองเรือดำน้ำลาดตระเวนสีน้ำเงิน I-401 (อิ401) ที่เขาได้รับมาด้วยเหตุผลบางอย่าง เขาได้กลายเป็นความหวังสุดท้ายของมนุษยชาติในการต่อกรกับกองเรือปริศนาเหล่านั้น

Every day, a young girl wearing a mask stands by the beach and sings a nostalgic melody. After experiencing two sudden heart-wrenching partings when she was only a child, Nino Arisugawa has been singing her songs to the ocean, bound by a promise made with her two childhood friends—her first love, Momo Sakaki, and a boy who composed music, Kanade "Yuzu" Yuzuhira. Having never met each other, the boys both individually promised that if Nino was ever separated from them, her voice would be the beacon to reunite them once again.

After six long years, destiny has finally placed Nino, Momo, and Yuzu in the same high school. However, the passage of time has changed many things in their lives—while Nino relentlessly attempts to fulfill her childhood promise with the boys, Yuzu's feelings for her from the past resurface, and Momo goes to great lengths to prevent a reunion with Nino. Through music, will they be able to mend their friendship and overcome all the feelings involved in this complicated love triangle?