The precious Heaven Jewel fell from the sky and split in two.
One half was stolen by the Mountain God, the other half by the Sea God. The Mountain God has morphed into the River King and the Sea God has morphed into the Sea King and they plan on using their halves against each. It is up to you to catch each of them, rejoin the pieces, and return the Heaven Jewel to the sky. Catch over 60 fresh water and saltwater fish. Collect and take care of various plants and insects.