Episode 600

"Protect the Children! Master's Evil Hands Close in" is the 600th episode of the One Piece anime.

Short Summary
As Luffy and Law remains captive in Caesar's lab along with the others who were captured, Caesar Clown went to retrieve the children from the remaining Straw Hats.

Meanwhile, Zoro's group are still running from the slime monster who had finally transferred itself to the ice lands, causing all of its pieces to converge together. At the ruined Lab, Usopp and Nami were confronted by Caesar who mercilessly suffocated them the same way he did to Luffy but was interrupted by the revived Brownbeard who demanded his crew back. However, Caesar beats him and proceeds to do the same to the two escaping Straw Hats.

With the children secured and were returning to the lab, Caesar Clown sent orders to Monet to prepare the den den mushi to broadcast his "special experiment" to all known brokers to show them his weapon of mass destruction, among the viewers were the two supernovas, Eustass Kid and Killer.

Long Summary
The episode starts with Luffy and his group still being watched by Vergo and Monet.

It then cuts to Ceaser Clown entering the lab where Nami and Usopp were hiding the drugged children. The children were still going rampant due to the drug candy withdrawals and one actually attacked Nami. Usopp trys to attack Ceaser but failed. Ceaser then explains how is power allows him to control the air itself and actually suffocates Nami and Usopp by depriving them of oxygen. He then tells the children to finish off Nami and Usopp if they want candy. But before they could Brownbeard appeared and saved them and was furious on how Ceaser treated him. Ceaser then orders the children to go on his ship.Then Brownbeard tried to fight Ceaser but in the end Ceaser used Gastanet and caused explosion on Brownbeard. He then turns to Nami and Usopp and performs another Gastanet and knocks them out.

The scene cuts to Zoro's group who are still chased by Smiley, but now all of Smiley has crossed the lake and was after them. The G-5 Marines are still dealing with Smiley.

Ceaser then calls Monet and ask if the broadcast is ready. He then sends a televised message to all the Pirates in the New World saying he is selling a Weapon of Mass Destruction that the Marines wish they had. A few of the viewers included Big Mom Pirates, Eustass Kid, and Killer who are interested in what this weapon could do.

Anime Notes

 * The anime adds the following:
 * Luffy asking who Doflamingo is and then remembering seeing him at Marineford.
 * Luffy learning from Tashigi that Doflamingo attacked Moriah after the Whitebeard War.
 * Chopper sneaking around while hiding under a book cover.
 * They added the sound of steps when Caesar enters the cave even though he is constantly gaseous below his knees, the floor was covered in snow, and he is always barefoot.