You are going to Watch One Piece Episode 688 English subbed online free episodes with HQ / high quality. Stream Anime One Piece Episode 688 Online English sub A Desperate Situation! Luffy Gets Caught in a Trap! At the palace hills, Luffy is still riding Ucy towards the palace but was dejected to see that the rest of the colosseum fighters are ahead of him in the race to fight Doflamingo. After a little help from the Funk brothers pointing out a short cut, Luffy and Ucy enter a tunnel.