In which fairytale does Gerda rescue her friend Kai from the title character?

In the fairytale "The Snow Queen" by Hans Christian Andersen, Gerda embarks on a perilous journey to rescue her friend Kai from the Snow Queen. Kai has been enchanted by the Queen's magic, causing him to become cold and distant. With her unwavering love and determination, Gerda faces various challenges to bring Kai back to warmth and humanity.