[1] The short was released on October 12, 1957, and stars Pepé Le Pew[2] and Penelope Pussycat.
As a street painter paints out a white line in the middle of a road, Penelope is being chased by a dog and runs right under the paint tank, getting a white line across her spine whilst the dog crashes into the tank and painter.
Pepé follows, wearing a mask and flippers but no oxygen tank (being a skunk, he can hold his breath for a long time).
For a long time Penelope swims under the sea until sunset where she surfaces to find a nearby island.
As Pepé endlessly chases Penelope, the island is revealed to be heart-shaped from birdseye view.