This remake is an RPG (role-playing game) that makes use of the story and world view of the Game Boy version of "SaGa III" and renews all characters and battle systems. The latest in the "Saga" series, which has further advanced the evolution system "SSS (Scenario Sync System)" of the free scenario system, in which the six races can change freely and various growth factors are also powered up, and the battle and the scenario are closely intertwined.

Long ago, the god "Sole" won the battle with the gods of another dimension and sealed them with the legendary warrior "Stessros".
However, the appearance of a mysterious water bottle shatters the peace. The world of the future was in danger due to the large amount of water and monsters sent from the water bottle. To change that future, three children were sent from the future to the present timeline.