Eiji Hino is a wanderer who has no place to call home and a tragic past. When metallic creatures known as the Greeed awaken after their 800-year slumber to attack humans and feed off of their desires, the disembodied arm of the Greeed named Ankh gives Eiji a belt and three Medals to fight the other Greeed as Kamen Rider OOO. The mysterious Kougami Foundation approaches Eiji and begins assisting him in his fight against the Greeed, though their true motives are not clear. As Eiji fights the Greeed and their Yummy monsters, learning more about the Greeed and Ankh, he starts to find a purpose beyond his journey.
E1: Medals, Underwear, and a Mysterious Arm▶ PLAY
E2: Desire, Ice Pops, and Presents▶ PLAY
E3: A Cat, Evolution, and a Glutton▶ PLAY
E4: Doubt, a Picture Message, and a Helping Hand▶ PLAY
E5: A Game of Tag, a Nest, and a Rich Girl▶ PLAY
E6: Fashion, a Contract, and the Strongest Combo▶ PLAY
E7: A Lousy Husband, a Trap, and a Jackpot▶ PLAY
E8: Sabotage, Having No Greed, and Taking a Break▶ PLAY
E9: Drenched, the Past, and the Scorching Combo▶ PLAY
E10: A Fist, an Experiment, and a Super Bike▶ PLAY
E11: A Traveler, a Swallowtail, and a Celebrity▶ PLAY
E12: An Eel, the World, and the Gravity Combo▶ PLAY
E13: Episode 13▶ PLAY
E14: Episode 14▶ PLAY
E15: Episode 15▶ PLAY
E16: Episode 16▶ PLAY
E17: Episode 17▶ PLAY
E18: Episode 18▶ PLAY
E19: Episode 19▶ PLAY
E20: Episode 20▶ PLAY
E21: Episode 21▶ PLAY
E22: Episode 22▶ PLAY
E23: Episode 23▶ PLAY
E24: Episode 24▶ PLAY
E25: Episode 25▶ PLAY
E26: Episode 26▶ PLAY
E27: Episode 27▶ PLAY
E28: Episode 28▶ PLAY
E29: Episode 29▶ PLAY
E30: Episode 30▶ PLAY
E31: Episode 31▶ PLAY
E32: Episode 32▶ PLAY
E33: Episode 33▶ PLAY
E34: Episode 34▶ PLAY
E35: Episode 35▶ PLAY
E36: Episode 36▶ PLAY
E37: Episode 37▶ PLAY
E38: Episode 38▶ PLAY
E39: Episode 39▶ PLAY
E40: Episode 40▶ PLAY
E41: Episode 41▶ PLAY
E42: Episode 42▶ PLAY
E43: Episode 43▶ PLAY
E44: Episode 44▶ PLAY
E45: Episode 45▶ PLAY
E46: Episode 46▶ PLAY
E47: Episode 47▶ PLAY
E48: Episode 48▶ PLAY