You, who are at your wits' end, decide to embark on a ship to sea to repay a massive debt, only to encounter a maritime disaster along the way, resulting in the sinking of the ship. Fortunately, you narrowly escape death and are washed up on a mysterious island by the ocean currents.

On the island, you establish a camp and embark on a new life. During this time, you meet the local inhabitant Nadi, rescue other survivors, and deepen your relationships with various companions through a series of events. With their help, you expand and develop the base, explore the mysterious areas of the island unknown to others, and discover more treasures and secrets.