At first glance, really, who in Hell knows what this picture means? However, it leaves viewers thinking "What is the story behind this image?"
The sky and colours give it a sense of loneliness, or perhaps a plan that has gone awry. This anatomy of the skeleton is very precise, and the dimensions of the overall picture look as though it reaches out to you for help.
Personally, it reminds me of the ending to Mortal Kombat 4, where the champion finally defeats Shinok, and receives his/her boon. (except this skeleton isn't being flushed down a toilet)
"Please, don't let me fall."