Let's Go! Smile PreCure! (Let's go! スマイルプリキュア!, Let's go! Sumairu Purikyua!) is the opening theme of Smile PreCure!, known as Smile Pretty Cure! by non-Japanese viewers, aired on February 5, 2012 by Toei Animation. It is sung by Aya Ikeda and composed by Hideaki Takatori. The anime itself tells a story about five girls who have to retrieve Cure Decor from villains from Bad End Kingdom, before all worlds in universe suffer from the "Worst Ending", by transforming to Pretty Cure.