This event is a treasure hunt at Dusk Hill with Noah in the third generation.
Routes[]
Go north = Mythril x2, + Light, Noah +1 love rate
Go east, keep going, go south = Mythril x3, + Light, Noah +1 love rate
Go east, keep going, go north, keep going, go east = Hold Finger, Marine Rouge, - Dark, Noah +1 love rate
Go east, keep going, go north, keep going, go west = Dream Hazard, Beast Ring, + Light, Noah +2 love rate
And finally, the last path gives the biggest reward (in my opinion, at least) but has small risk to it, not to mention it makes the event take up 1 turn.
Go east, keep going, go north, keep going, go north = - Dark, Noah -1 love rate
You then need to fight 2 Garm's with just Thoma and Noah in the party. Warning: They counterattack. If you win:
+ Light (Note - this negates the dark hit from before, and then some), Noah +3 love rate (at least, I guess), a White Frame and 50PP (Yes, 50PP).