A man is left in space due to an unfortunate accident while another man on Earth struggles to bring him back safely.

Missing ?70 billion appears to three sisters who grew up in absolute poverty but with a close bond. Entangled in a conspiracy that involves the rich and powerful, three sisters who wanted to live like everyone else confront a life task whether to keep or to return the money.

Song Ah is a 29-year-old music major, but this is actually her second time in college. Despite her passion for music, the fact that she started later than her peers means she faces hurdles everywhere she goes.