O Chosen One
Into thine hands bring together all three
Their treasures combined tame the Beast of The Sea
From the trio of islands, ancient spheres shall you take
For between life and death, all the difference you'll make
Climb to the shrine to right what is wrong
And the world shall be healed by the Guardian's song...
Those words are carved into the shrine floor. Three spheres sit on the shrine: a blue one, a red one, and a yellow one. If you approach them, you will be attacked by Lugia.
You must fight (and or capture) Lugia in oder to leave. Lugia is at level 50, and will be holding the