Like 90% of Palauan myths, it has a grim ending. His old mother carps about being hungry while he's on walkabout (or, erm, sailabout in the case of Micronesia). Enraged, he grabs a sword and hacks into a nearby tree. Voila! Mamma's favorite fishes well from the torn limb.
Good result! Until jealous neighbors chop down the Magic Fish Tree and its stump floods the whole darn village.
Moral: Don't nag your travel-happy offspring to come home for the holidays. It could go horribly, horribly wrong.