Once there were two suns and no moon. The suns are jealous of each other, and compete in tests of endurance and strength. Finally Ambitious-Sun decides to trick Rival-Sun, and invites him to go bathing. On the river's bank it is agreed that Ambitious-Sun go upstream, and Rival-Sun downstream; and that Ambitious-Sun jump first into the water, Rival-Sun to follow as soon as he hears the splash. But, instead of jumping into the water, Ambitious-Sun throws in a great rock. Rival-Sun jumps in, and the stream carries away much of his strength and power. Ambitious-Sun says to Rival-Sun, "Henceforth your name shall be Moon. I am now your master, and shall be king of day. You may rule the night." — Beware of the invitation of a jealous rival.