In a futuristic world where humanity relies on sunspots for energy and navigation, players assume the role of an eccentric historian who discovers that the sunspot sketches by the 17th-century astronomer Johannes Kepler hold cryptic clues to a mystery threatening the stability of the solar system. As players navigate through time, they uncover conspiracy-laden secrets, interact with historical figures, and solve intricate puzzles that combine history and science. Choices made affect the timeline of both past and present events, and the fate of Earth's energy resources hangs by a thread. Will you unravel the truth behind the sunspots before darkness falls?