Lyn Lyn's beloved Nai Nai has a birthday party approaching! All she wants to do is make her a lucky hat, but her crochet skills are not nearly as refined as her Nai Nai's. Lyn Lyn cleverly ask for Nai Nai's help, saying the hat is a gift 'for a friend.' She wants it to be a surprise, after all. As she struggles to crochet the gift for her grandma's birthday, making mistakes leaving her with a hole in the hat, her perseverance and their special bond lead Lyn Lyn to realise that the perfect gift for Nai Nai comes from within. This is a love letter to all grandparents who have been there for us in more ways than one. The book will feature backmatter with a crochet pattern for young enthusiasts as well as an author's note so that the reader can learn some of the Chinese translations.