Ivia is an ordinary little angel in heaven. After finishing her work every day, she goes home to tinker with her little inventions. She is down-to-earth and quiet. Suddenly one day, the heaven is broken, the sun is exposed, and the wings of the angels are burned and fall to the mortal world. Ivia keeps her wings with her own inventions, but heaven has been destroyed, so she has to come to the mortal world.