After three weeks, Marine Rookies filler arc came to an end and "One Piece" will now enter in the highly-anticipated Whole Cake Island Arc. Last week, Luffy and the gang encountered three young soldiers named Grount, Zappa and Bonham when they infiltrated the Marine base on Fron Island to get food. The Straw Hats easily defeated the Marines but when they are at nearly at their escape vehicle, a Marine ambush was waiting for them.

The episode was titled "The Devil's Fist - A Show Down! Luffy vs. Grount" and kicked off with Vice Admiral Prodi confronting the pirates with an ambush. The soldiers are equipped with rubber shields as a precaution to Nami's thunder attacks and Carrot's Electro. However, the Straw Hats are not a single trick pony and easily adapted to their enemies.

According to Anime News Network, Grount's first encounter with Luffy that ended on the young Captain's defeat caused too much frustration that it got the better of him. Grount was seen teary and exclaiming to his comrades that he is too weak and can't do anything against the pirate. Though Bonham and Zappa are disappointed to Grount's lack of spirit, they reminded him of each of their strengths where Zappa were his swords, Bonham his Qigong and for Grount, his left arm.

A mini flashback was also featured in the latest episode of "One Piece" where Grount first met Admiral Aokiji and how he came into the Marines as reported by The Anime Scrolls. It was also revealed that the Steampunk machine in Grount's left arm was an inhibitor to his monstrous limb. Grount remembered his time with the icy admiral and found the will to fight again the escaping pirates.

During the final showdown, Grount released his true power and his left arm was revealed with a humongous limb covered in red fur. The two battled it out ensuing into spectacular fight scenes and amazing animation. Finally, Luffy unleashed his Thor Elephant Gun where he overpowered the young Marine.

After the battle, some members of the Sanji retrieval team are shown with bloated stomachs where Nami are scolding them because nothing is left from all of the food that they stole earlier. Chopper mentioned that it didn't even last for 10 minutes. Meanwhile, the next episode of "One Piece" will feature the return of Sanji in the series and the start of Whole Cake Island Arc.