Skypiea ek Sky Island hai jo Grand Line mein Paradise ke area ke upar badalon mein hai. Yahan pohanchne ke liye Knock Up Stream naam ki ek powerful ocean current ka use karna padta hai jo ship ko hawa mein hazaron meter upar phenk deti hai. Skypiea mein do tarah ke log rehte the — Skypieans (jin ke peeth par wings hain) aur Shandians (jo asal mein island ke original inhabitants the). Yahan ki main kahani 400 saal purani ek war ke ird gird ghoomti hai. Skypiea ka god Enel tha jisne Goro Goro no Mi (Rumble-Rumble Fruit) kha rakha tha — electricity ki power. Enel ne apni "Mantra" (Observation Haki) se poori population ko dar mein rakha hua tha. Skypiea mein hi Luffy ne pehli baar kisi Logia type Devil Fruit user ko haraya — Enel ko. Kyunke Luffy rubber hai, electricity us par asar nahi karti — ye Enel ke liye shocking tha! Skypiea arc mein Poneglyph bhi milta hai jisme ancient weapon Poseidon ka zikr tha. Roger bhi Skypiea aaya tha aur usne Poneglyph par apna message "I made it here" likha tha. Skypiea arc adventure aur discovery ka best example hai.