They'd come to a large cavern, in the center of which was a pit. But they weren't alone, as the wraith from before was there too. Had it been drawn by them, or this place? It wasn't clearly, as it floated over to them.

Avoid the pit, avoid looking into it--and dodge the wraith while killing it with the camera. Simple, right? As soon as the wraith started moving, Trunks was too. Manifesting just enough ki around him to make himself look 'tasty', so to speak. "Over here!" Bait to keep it away from Sunset, so they could get rid of it once and for all with the camera. After that, they could deal with the Abyss.