radioing for help. >> we were asked how long have we got left to float, what's your position. >> can you give a free channel? over. >> we'll tell you one. >> he would say, what rank are you? i was saying, well, i'm not actually a rank. i'm a guitarist. my job is to rock and roll, not to rescue. >> moss hill is on the ship's entertainment staff. he stumbles into leading a desperate rescue effort when it's clear none of the ship's officers are taking charge. >> i thought, well, we'll go onto the bridge and just see what the captain's doing now because we thought obviously he's still on the bridge doing whatever it is captains do at a time like this, but there was nobody on the bridge. >> the terrifying drama begins a few hours earlier when right before a scheduled performance, the ship's lights go out.