Chapter 3 begins where 2 left off with Michonne and Pete in the dingy, theres a lot of conversational choices here and once near the boat you’re attacked by walkers which begins lots of QTEs. Once you finish fighting Pete will pull you up onto the rocks away from the walkers.
Once on the shore there will be some more conversational choices, once back in control of Michonne walk to the right and you can choose to either go in through the window or use the ladder, I chose the ladder which began a brief loading screen for the next cutscene which ended the chapter.
Choosing the window will do the same.