Starting out as an ordinary person, the protagonist explains space, time, dark energy, dark matter, and the laws of physics from a physicist's perspective. Step by step, he pushes himself to the limit and reaches the summit. The beginning of life, the birth of the universe, the end of time: what is the ultimate truth? Rising from obscurity and crawling up from the bottom, an ordinary person takes one step at a time toward the highest peak. But what does it mean to reach the top? Where should humanity, or life itself, go from there? What does it mean for that being to ascend to the absolute peak? What, in the end, is the ultimate truth? Read on to discover an explanation of the universe's ultimate mysteries through the lens of physics.