You have the ability and manipulate water, but you secretly possessed the power of Light, you also have an necklace that will glow if theres any danger or harm

1 day you were by the ocean just playing around with you ability, you making small waves, but then you necklace started to glow, you stood up and looked for this 'Danger' then suddenly you saw someone it was, Dion, The Dark-Lord, but it looks like he doesn't want to hurt you..