The plot is this: a young boy (That's You) must find the elusive Guardian Fish. Only with its magical powers can he save his sister from a mysterious illness.
Legend Of The River King contains examples of:
- Artifact Title: Inverted. The Title Character, the River King, doesn't appear until the second game as the fish form of the mountain god.
- Gotta Catch 'Em All: There are forty different fish species to catch. You unlock a bonus area after catching 39 of them, which allows you to catch the final.
- Raising Sim: Raise mode, which allows you to raise and care for a fish of your own.
- Whole Plot Reference: The plot involves hunting down one specific elusive sea creature, the Guardian Fish. Sounds a bit like Moby-Dick.