Today is Ririka's birthday! This year, she will celebrate it alone, and to lift her spirits, she thought of going down to the city to eat her favorite pistachio ice cream from the best ice cream parlor in the world. On the way, page by page, she meets her friends. When the group finds the ice cream parlor closed, the friends are called to save the day! A story that speaks in a simple and entertaining way to children about the immense value of friendship.