Two identical tanker trucks pull into Gramps Gas Station at the same time. Shortly after, Huckle and his pals notice cars spewing bubbles and conking out. Huckle and his team solve the mystery by finding out bubble bath soap was pumped into the gas station tank by mistake. Huckle, Lowly and Sally find an abandoned egg in the park. They search for a nest that has similar-looking eggs. When a baby bird unexpectedly hatches out, its webbed feet and a bill give the kids a big clue about where its family lives. In the end, the little lost duckling is welcomed on the pond by the rest of its family.