After being defeated by Pekoms, Caribou starts to kidnap mermaids again until Jinbe subdues him. Jinbe then departs Fish-Man Island with him and takes him to the G-5 Marine base. After the Caribou Pirates attack the base, Caribou escapes and leaves his crew behind. During a storm, he ends up on an island where he is nursed back to health by a granny. He is also mistaken for a revolutionary named Gaburu. After reuniting with his crew again, Caribou assumes Gaburu's mantle and leads the citizens in a revolution against Scotch. After emerging victorious, however, Caribou is defeated and taken away by X Drake.
After the confrontation with Pekoms, Caribou goes on another mermaid kidnapping spree at Mermaid Cove until Jinbe puts a stop to him. Jinbe then puts Caribou in a barrel and takes him away from Fish-Man Island while riding a coated boat to the surface. Suddenly, Caribou's brother Coribou and the Caribou Pirates appear. Unfortunately for Caribou, Jinbe quickly starts to swim away from Coribou as fast as he could, taking Caribou with him. Later, Jinbe arrives at the G-5Marine base, shocking Caribou.
Jinbe leaves Caribou at the base, and Caribou is then seen tied up at the feet of CommodoreYarisugi, as the Marine imagines the various ways to torture him. When the Marines are about to burn Caribou at the stake, Coribou and the Caribou Pirates appear and Caribou calls out to them to save him. The Caribou Pirates then begin attacking the G-5 Marines. Coribou manages to cut down the stake and saves Caribou. Once freed, Caribou takes advantage of the chaos and flees on his crew's ship, leaving his brother and all of his crewmates behind, much to Coribou's shock. The ship is later caught up in large waves, and Caribou is forced to flee the ship by rowing on a small row boat.
Having barely escaped with his life from the sea, he arrives on an unknown island which happened to be one of Kaido's favorite islands. After passing out due to having succumbed to his injuries, he later wakes up to find an old lady nursing him back to health. Caribou eats the woman's pie and then steals her jewelry while she sleeps. After she wakes up, she gives him a lunchbox filled with meat pies and directions to the harbor.
While walking towards the port, he sees some people calling him "Commander Gaburu". The old lady suddenly appears and scares off the men by throwing stones at them. She then sends him off to the port. Before getting there, he goes back out of curiosity only to find the men from earlier still feverishly looking for him. While stealthily looking around, he stumbles upon a weapons factory.
After leaving the factory, he sees a gathering of the soldiers showing a banner of their revolutionary leader Commander Gaburu, who bears an uncanny resemblance to Caribou, which explains why the soldiers believed he is their lost commander. After the soldiers begin to revolt, the revolution is put down by Kaido's subordinate Scotch as Caribou watches in terror. After defeating the revolutionaries, Scotch looks down on them.
Caribou then enters the old lady's house and is horrified to see her lying on the ground, surrounded by fire. He looks at the picture laying next to her. He sees that in the picture, Gaburu is eating a meat pie made by the old woman, and the picture is titled "I love grandson Gaburu" revealing that Gaburu is now dead and was the grandson of the old woman. She soon wakes up and tries to prevent Caribou from fighting, begging him to run away as she too believes the pirate to be her grandson. Her house is then broken into by Scotch who wastes no time in attacking her, greatly shocking Caribou.
The old woman, still thinking Caribou was Gaburu, steps in between Scotch and Caribou, preparing to fight Scotch. Caribou then uses this opportunity to escape Scotch. Once Caribou escapes from Scotch, he runs into his brother Coribou and his crew mates, who have escaped from the G-5 Marines with a stolen Marine ship. Caribou and Coribou quickly reconcile due to their now deceased grandmother telling them to always stick together. Meanwhile, Scotch captures Gaburu's grandmother and is about to execute her as an example. He is interrupted when a Marine ship is seen arriving in the distance.
On the ship are none other than Caribou and his crew, with the former posing as Commander Gaburu. Once back on ground, they waste no time engaging Scotch and his men in battle while simultaneously freeing the workers and Gaburu's grandmother. Caribou appears to quickly gain an advantage against Scotch, choking him with his Devil Fruit powers. After defeating Scotch, Caribou proceeds to destroy the factory, bringing it crashing down. They all then celebrate their victory, but then a dinosaur suddenly appears and knocks the brothers off their platform. The titanic lizard soon turns back into X Drake and drags Caribou off to parts unknown. Gaburu's grandmother, greatly saddened, gives her "grandson" one last pie.
Drake takes Caribou on a ship and sails out to sea, as the revolutionaries, the old woman, and Caribou's crew bid them farewell. Not long after, Gaburu's grandmother visits the grave of the real revolutionary commander and reveals that she knew the whole time who Caribou really was, much to the shock of Coribou and the rest of Caribou's crew.
