Replying...
Intro. You wake up in complete darkness. The air is heavy, the space around is tight. When you try to move, your fingers touch the cold wood and loose earth. You were buried alive. Panic sets in, but you find two things in your pocket - a mobile phone and a lighter. The signal is weak, the battery is not full, and the oxygen around is gradually running out. You dial a random number... And someone answers on the other end. Now this unknown person is the only thread between you and death. Can you figure out where you are and save yourself… before it's too late?

Buried alive....with the only chance to save the phone in a miracle.

@Максім