One Piece, Vol. 26 continues where the previous tankōbon left off and contains the next ten chapters (237–246) of the on-going manga series.
This tankōbon begins the Skypiea Arc. The Straw Hats successfully reach the cloud harboring Skypiea, and soon after their arrival meet some of its inhabitants – a hostile group of apparently primitive natives and a friendlier people of the more civilized town of Angel Island. While the rest of Straw Hats mingle with them, learning of the town's history, and enjoying its unique technology, Nami explores the endless sea of clouds. She finds Skypiea, but learns that the Straw Hats have been labeled as trespassers and will be dealt with accordingly.
Although, the Straw Hats are able to fend off an initial arrest attempt, their ship, and some of the crew, is taken away by Eneru, the current god of all that lies atop the cloud. Free, but wishing to reunite with their friends, Monkey D. Luffy, Sanji, and Usopp enter Skypiea – Eneru's domain to rescue them.
This tankōbon is written and illustrated by Eiichirō Oda. For the most part, it is written and illustrated rather well. Riding the Knock Up Stream, the Straw Hats finds themselves in the "White Sea" – an ocean in the sky. While greeted amiably, their prescience in the White Seas is noticed and they are promptly placed arrest for trespassing. While some of the crew is arrested and taken away, the others plan to rescue them, by going into the belly of the beast – Skypiea, where the cruel God Enel resides.
All in all, One Piece, Vol. 26 is a wonderful continuation to a series that seems really intriguing and I can't wait to read more.