Wearing an antiquated pilot's helmet, goggles and scarf, Snoopy is sitting shown atop his doghouse, imagining that it is an airplane in flight. While his appearance is indistinguishable from that of his World War I Flying Ace alter-ego, there is no mention of the war, or of the Red Baron. Instead, Snoopy imagines that he is flying solo across the Atlantic Ocean.
This alter ego is first introduced in a strip published on October 21, 1985, in which Linus van Pelt tells Charlie Brown of the first non-stop Transatlantic flight by Charles Lindbergh in 1927. Linus mentions that Lindbergh became known as the "Lone Eagle," and wonders aloud who else could have achieved such a feat. In the final frame, Snoopy is shown in his pilot's gear, sitting on his doghouse, calling himself the "Lone Beagle.
In the subsequent strips, Snoopy is shown imagining that he is flying across the Atlantic Ocean, even when he is interrupted by Charlie Brown refilling his water dish. When he imagines landing in Paris, Marcie appears. Joining in the fantasy, Marcie interviews the Lone Beagle in mock Barbara Walters-style by asking him about his feelings, and what kind of tree he would be if he were a tree. Snoopy responds by kicking her.
The storyline ends on October 25, 1985, with Snoopy imagining a ticker-tape parade in New York.