From an initial tiny ‘fireball’ to its current state with an observable diameter of approximately 46 billion light-years, the story of our universe began with a ‘Big Bang’ - which is neither ‘big’ nor a ‘bang’. Cosmic inflation caused a region once as small as an atomic nucleus to instantly balloon to the size of a soccer ball. The ocean of quarks and gluons cooled, forming protons and neutrons. When the universe was about 380,000 years old, photons were able to propagate freely, and they eventually formed the cosmic microwave background radiation that blankets the entire sky. During the Dark Ages, dark matter weaved a cosmic web. The first-generation stars illuminated their surroundings, and heavy elements produced by supernovae ultimately provided the building blocks for planets and life. We use the LAMOST telescope to survey millions of galaxies, the FAST radio telescope to capture the pulse of the universe, and gravitational waves and neutrinos to uncover secrets from the very early universe. In the countless universes born from inflation, could there be another you hidden? Let's start a journey of exploration in this fulldome film.