Post-Alabasta, Goat Island & Ruluka Island - One Piece

While on the run from some Marines, the crew stumble upon an island inhabited by a man named Zenny who lives with a herd of goats. The crew set out to him in his seemingly final days. After evading some Marines, the crew stop off in a small town with a huge tower, which is also being oppressed by the Mayor whose overtaxing the citizens. But a bigger concern is a nearby mist that prevents anyone who enters it from leaving.