Yakamoz S-245 – The protagonist of the story is Arman, a swimming instructor and biologist. The events take place during a period when a natural disaster suddenly strikes the Earth, resulting in the loss of many lives. Now, Arman is not only forced to save himself but also to help many others who have been affected. Together with his comrades and the charming Fefne, Arman needs to board the Yakamoz S-245 submarine and not only understand the causes of the natural catastrophe but also eradicate them.