When Daedalus was building the wings, he used candle wax in order to connect the 2 sides of the wings. Daedalus told Icarus specifically not to fly too close to the sun or else the sun would melt the candle wax. Icarus being his immature & cocky self, he decides to rebel against Daedalus and flies close to the sun. When the wings melt, he falls from the sky & Daedalus tries to help him but since Icarus fell in the ocean, he drowns.