Evan, the genius boy, has been missing for years. One day, a letter claiming to have been written by Evan surfaces, stating that he is on an uninhabited island in the Pacific Ocean. With unknown motives, he specifically requests a girl named Dysis come to find him. The player controls Dysis throughout the story, as we learn more about both her and Evan. As the player progresses through the puzzles in groups of two to four, the game pivots back and forth between the puzzle-platforming and visual novel segments. Through the narrative moments, we uncover more of the story, and new puzzle mechanics are introduced. The challenge of the puzzles lies in the player’s ability to understand and solve the puzzles using logic, rather than to overcome challenges based on physical skill. As the difficulty curve increases, the puzzles become more complex by combining two or more of the previously introduced mechanics.