Heroes of Sky City

This is a story of three kids named Alex, Luna, and Emily. After Alex's dad kicks him out of the house, Luna helps him discover he has technological superpowers. She and her baby sister Louise have powers of their own: Luna can control the elements and Louise has animal powers. They are soon recruited by a hero agency to go on missions and help people. Once Emily joins them, they go on their biggest mission yet! Emily wants to find her mom, while villains are trying to steal something mysterious from the bank...