In short, there is a new app that is going to be released which is supposed to link potential clients with college students working part time as freelancers.

The idea behind the polygins is that each of them represents an individiual freelancer. All of them combined show up as a network of freelencares, and the ones flying in and completing the letter, are designed to be inteprerted in two ways:
a) Aviliability of space for new freelancers (to put it bluntly: "join now" call to action, represented in visual ques) and
b) A way show potentional costumers that there is someone who can help them complete the project they are working on (just like the polyigons are "completing" the letter S).