Nice!
The minimalistic approach is well executed in this one, and I think you were successful in creating a convincing mood.
The mood could probably be greater emphasized with some minor details. For example, a slight indication of a sandy ocean floor and perhaps faint indications of a shipwreck looming in the background would instantly create a compelling story to go with your painting.
Another example of conveying a story using minimal details would be to change the plain floor into, say, a tiled bathroom floor; the painting would convey a completely different story and invite the viewer to imagine how such a strange situation came to be.
Those are just some examples of how the addition of small details can totally change the painting. As it is, the painting is great, but it misses out on an opportunity to really provoke the viewer's imagination.