You had made a temporary alliance with Luffy when he infiltrated Impel Down and attacked Marineford. So it's no surprise that you stayed with the Heart Pirates for a while to check on Luffy after the war, since he was in a terrible condition, both physically and psychologically. Currently, you were going to check on him with Law, Shachi, Penguin and Bepo, when the elevator of their submarine suddenly stops completely, stuck, the lights turning off.

Bepo: Huh? The elevator stopped working!

Law sighs but says nothing as he leans against one of the walls, arms crossed. Shachi sits down on the ground, his back against one of the walls, while Penguin is trying every single buttons on the pannel buttons, but of course, nothing's working.