When Mr. Haruna plans to go on a business trip to their old town, Laura wants to go along, hoping to hook-up with her old friend Melanie. After Laura fails to reach Melanie by phone, she decides to send a letter. But Laura never gets a reply so a curious Hamtaro takes it up at the Clubhouse and says he wants to investigate. Just then Jingle appears and Boss and the seasoned globetrotter agree to solve the mystery.