"When the hustle and bustle of mankind dissipates, the ocean begins to write its own history."
Thousands of years after humans left Earth, the Great Barrier Reef awakens from its dead.
Tiny corals reorganized their DNA in the polluted sea and evolved "conscious coral bodies" - they can sense light, sound, emotions, and resonate with the ocean with their songs.
The ocean has entered a new era: the Coral Period.
In this era, corals try to reconnect the earth's life cycle, while the remains of old human technology awaken in the deep sea, becoming a new threat.
Purpose: environmental protection