Wansa, a puppy mascot created by Osamu Tezuka for Sanwa Bank, is forcibly separated from his mother after being sold at a low price. Driven by an unwavering determination to escape captivity, he embarks on a perilous journey to reunite with her, a quest central to all official narratives. His story intertwines themes of perseverance and friendship through bonds forged with diverse companions who assist his search.

The narrative evolves from lighthearted comedic episodes into emotionally charged drama as the journey progresses, mirroring the escalating stakes of Wansa’s mission. The anime’s latter half intensifies focus on resolving the maternal separation, culminating in a conclusive reunion. In contrast, the manga’s adaptation remains unresolved, its open ending attributed to production constraints.

All documented portrayals strictly center on Wansa’s pursuit of his mother, with no expanded backstory, spin-offs, or exploration of traits unrelated to this singular goal.