As Elder Ham's Sunflower Seed Harvest Festival approaches, Sandy confesses to Hamtaro that she has a crush on Maxwell because he reminds him of her brother. Sandy asks Hamtaro to find out if Maxwell feels the same about her.

Picking up where the last episode left off, Hamtaro and Oxnard locate Sandy's twin brother, Stan, and bring him back to the Clubhouse. To celebrate, the Ham-Ham gang decides to throw a surprise reunion party for Sandy.

In a game of Blind Man's Bluff, Cappy takes Bijou's ribbon on accident, but Hamtaro gets the blame. To make it up to her, everyone plans a trip to Acorn Mountain and collects some acorns to help her feel better.

Laura's gone down with a cold, and Hamtaro feels terrible about her condition because he kept running on his wheel all night. Meanwhile, Boss develops a "stomach-ache" and Maxwell steps in to help cure him with yogurt found in Laura's fridge.