Enies Lobby World Government ka judicial headquarter hai. Yahan CP9 ka base tha — jo duniya ki sab se khatarnak intelligence agency hai. Enies Lobby ka entrance "Gate of Justice" ke through hota hai. Ye arc Straw Hats ke liye ek turning point tha. Jab CP9 ne Nico Robin ko kidnap kiya aur Enies Lobby le gaye, to puri Straw Hat crew ne World Government ke khilaf declare kar diya — unhon ne World Government ka flag jala diya (Luffy ne Sogeking/Usopp ko order diya). Ye signal tha ke ab ye crew World Government ka open dushman hai. Enies Lobby arc mein sab Straw Hats ki nayi powers aur abilities reveal hoti hain — Luffy ka Gear 2 aur Gear 3, Zoro ka Asura, Sanji ka Diable Jambe, Chopper ka Monster Point, Nami ka Perfect Clima-Tact. CP9 ke agents ke paas Rokushiki techniques theen (Soru, Tekkai, Rankyaku, Shigan, Kami-e, Rokuogan). Luffy ne CP9 ke sab se taqatwar agent Rob Lucci se ladai ki. Lucci ke paas Neko Neko no Mi Model: Leopard tha. Luffy ne aakhri Jet Gatling attack se Lucci ko gira diya. Enies Lobby arc happy ending ke saath khatam hua — Robin ne pehli baar dil se kaha "I want to live!" — aur Going Merry ne unhein rescue kiya.