What do cats do when night falls? When the moon fairy shines brightly, our cat friends Aru, Lala, and Chacha gather in a lovely attic. Aru, the skillful one who loves stories and sings well; Lala, the sensitive beauty; and Chacha, the foodie who loves to eat. The three friends Aracha meet every night in the attic to create fun stories. By singing and dancing joyfully with Aru, Lala, and Chacha, our beautiful Hangul will also be learned little by little! Let's learn Hangul in a fun way with Aracha, your Hangul friend! Come with Aracha! A! Ra! Cha! Children's Hangul learning will grow along with the mysterious cats. In the dark night, when everyone is asleep, a light turns on in the mysterious attic under the roof. Three cats are sharing fascinating stories. They are so amusing that even the neighboring mouse brothers are secretly eavesdropping. Aru, who loves stories and dreams of becoming a writer; Lala, the cute one who adores Aru's stories; and Chacha, the chubby one who loves to eat, are the owners of the attic. Would you like to join us on a journey into the wonderful world of Hangul stories, as if with the moon fairy?