His Dogness and Lord Kelvin are out for their morning constitutional when His Dogness spots a heart in a ditch. The heart isn't the sort of heart that beats. It is the sort of heart that feels. And it is ever so blue. Ever so gently His Dogness picks it up in his mouth and takes it to Lord Kelvin.
"Some little girl is going to be missing this," Lord Kelvin says. "But, in the meantime, let's take it with us and see what we can do about all this blueness."
Although everyone can see a heart that beats, not everyone can see the heart that feels, but His Dogness and Lord Kelvin have a knack for finding just the right people-people who can see things that are invisible to others. So, off they go to restore the blue heart.
At the end of their adventures, there is a happy ending, although not necessarily the ending His Dogness and Lord Kelvin expected.
