Hamtaro: Hamtaro's Birthday! - 3000 Hammy Steps in Search of Mommy

As Hamtaro's birthday approaches, Laura shares a story about Hamtaro's origins, though she doubts its truth. Eager to discover his roots, Hamtaro, accompanied by Boss and Oxnard, sets out on a quest to find his mother. Their journey is driven by a desire to confirm Laura's tale. Unbeknownst to Hamtaro and his companions, the other Ham-Hams are diligently working behind the scenes. They are organizing a surprise birthday party, hoping to make Hamtaro's special day even more memorable. The anime follows the parallel narratives of Hamtaro's adventurous search and the Ham-Hams' preparations for a joyous celebration.