Zoro gets lost, Sanji gets captured by the marines, the Strawhats break into the ship's prison, and they all escape with a bang. Not exactly in that order, much to the confusion of Sanji's cellmates.

The plan was simple, as good a plan as a clan of shipwreckers and bounty-hunters could ever come up with. Capture one of the weaker Straw Hats, the ones without bounties, and make them beg for mercy until the stronger ones surrendered. Nothing can possibly go wrong with such an easy, straightforward scheme. Time to make some money!

In the original timeline, Shanks took Higuma's mistreatment calmly and with dignity, shaping Luffy's essential character for the rest of his life. In this timeline... "Huh!" said the kid. He tugged at his cheeks. "Guess I'm in the past, then!" His expression cleared, because apparently that made sense to him, and he grinned. "Shanks! Hey, Shanks, you never told me how cool you are!"