About the Dressrosa Arc
The Dressrosa Arc is the 27th story arc of the manga and anime One Piece, both the second and last story arc of the Dressrosa Saga, and the fourth story arc of the second half of the series.
The Straw Hat Pirates and Trafalgar Law, together with Kin'emon, Momonosuke and the captured Caesar Clown, travel to Dressrosa with the goal of taking down the nation's king, Warlord of the Sea Donquixote Doflamingo. However, they soon set into motion a series of world-changing events, as their actions interact unexpectedly with those of larger forces at play.
After Doflamingo resigned as a Warlord, islands across the world fell into chaos as they prepared to lose the support of his Underworld businesses. At the new Marine Headquarters, Brannew talked about the potential instability created by Doflamingo's resignation and Law's possible expulsion from the Warlords of the Sea, and Sakazuki responded that he had sent Fujitora to deal with Luffy and Law's alliance.
Doflamingo called the Straw Hats and Law, and Law arranged to return Caesar Clown at 3 PM on Green Bit. During the call, Doflamingo hinted to Luffy that he had something that the Straw Hat would like to get. Afterwards, Law revealed that Caesar's return would be a cover for their planned destruction of the SMILE Factory in Dressrosa, the location of which remained unknown. The alliance then ate, and Kin'emon revealed that his comrade Kanjuro had been captured while helping him leave Dressrosa to go after Momonosuke, and he wanted to rescue Kanjuro while in Dressrosa.