Just a couple of days before the submarine's arrival to home, the tired mariners woke up with harsh turbulance and loud alarm noises. Some of the mariners lost their lives instantly, some of them held onto life with life buoys. The ones who were still alive and inside the submarine, not knowing what had happened, hid in the torpedo room and asked for help with a telephone cable which was launched to the surface. You play as one of the soldiers inside the Dumlupınar submarine and witness the atmosphere inside the submarine both before and after the an harsh accident with a Swedish freight ship which caused Dumlupınar to sink to the bottom of the sea.