What I see is an eccentric guy (hyped up on whatever his race of square dudes has developed) who gives the bored triangle dude something SIMILAR to the sun, which the triangle dude has always wanted for some reason (maybe he is greedy?). Or, the Triangle dude is trying to stay awake all the time by keeping up with the sun--until he gets the light that allows him to conveniently stay awake nonstop? The triangle dude is then fascinated by the new light that he owns and he is totally consumed by it since there is not much else to do on his planet. Then he snaps out of it, destroys the light, suddenly sees nature (where did the seed come from?), has his respect for the sun again, and will finally develop a healthy sleep schedule. lol It's not very clear to me. I do like the mysterious feeling that animations like this give though.
Also, the music is sounds good but there is way too much of a low end (maybe not your fault). I want to listen to it but the bass is really annoying.