One Piece Episode 620 English Subbed Episode Title:A Critical Situation! Punk Hazard Explodes!.Episode Description:Monet is moments away from activating the self destruct button when she felt her heart being stabbed and collapses. At the same time Caesar Clown stabbed the heart believing it to be Smoker's heart. The Straw Hats are still racing towards the exit of the collapsing lab when they felt the explosion of the SAD room and then saw Shinokuni on their trail. Smoker, seeing that they nearly reached safety, questioned Trafalgar Law of why did he possessed his heart the whole time. Law reveals his clever deception he played on the mad scientist where he returned Monet's heart to Caesar without him knowing. At the tanker, Baby 5's Missile Girl attack failed to take down the Franky Shogun and their duel continues whereas Buffalo contacted Doflamingo of the situation. After confirming that the island wasn't destroyed as intended, Doflamingo decided to tend to the matter himself and is seen somehow flying over the sea towards Punk Hazard.