One day there were 3 little boys called Kalem,Logan and Mackenzie. But the next day in Hawaii a volcano erupted called Mauna Loa. But the 3 little boys had a secret, they were super heroes! Kalem is actually Astro Boy, Logan is actually Super Boy and Mackenzie is Ice Boy all of the powers are Sonar Beam, Super Strength and Freeze Power.
So they flew to Hawaii in a Helicarrier which is called S.H.I.E.L.D and this is what secret agency they work for. While they were there everyone was running away so Ice Boy froze the lava, Astro Boy zapped the ice so it cracked and Super Boy pushed the volcano into the water so they saved the world! ( or island if it didn't affect the world).