Keep at it, the plot looks pretty solid, I'd try to get the context to be more realistic, there's a million ways to do that, adding animation to the water, leaks, grit on the walls, ambient sounds mixed at a low levels so they don't cover voices. Vocals sound a bit too reverbed, probably the room they're being recorded on lacks acoustic treatment? Animations could use some love too.
Overall it looks raw but there's something there