95 gst won't start

Hi all, new to this forum. Have a dilema. I aquired a 95 GST, car is flawless w/ 70K, but won't start. Thought it'd be a cheap, easy fix, but I'm clueless w/ imports. When I turn the key, it sounds like the fywheel is just effortlessly spinning. Like no compression. A few times it actually sputtered for about a minute. I have no clue, any ideas????? And is that car worth anything? As I said I aquired it(don't ask)legally.

T-belt slipped , or broke, sounds like it slipped........sorry man.