Rainy summer evening... Young people are arriving at the new trendy club named Phobos which is still under construction. Or re-construction - since it's a former bomb shelter which is reconstructed to become a club. At first, the party sees nothing wrong, but soon the bunker doors turn out to be locked, and the teenagers get trapped underground without light and communication. At first, all of them are joking and do not realize how dangerous their situation is. Then they get frightened. All of them will need to cope with their fears before the bunker will let them free.
Four good folks from schools got reunion in a summer café on the bank of River Moskva, and they had an unthinkable trouble to deal with check, though one of them is so rich. One by one, a friend left the table to find solution and everyone of them met with different stories. The rich one got caught, ended up in jail for a night with the help from other folks. Friendship never ends...