When Monarch butterflies are missing from the school garden, Benny and the rest of Sparks' Crew follow one Monarch to see where it goes. They soon discover that all the Monarchs are on the move and are curious as to why.
Elinor and her friends follow a bee to its hive and observe the honey-making process, where they discover that honey is goopier when it has less water in it. Elinor, Olive and Ari welcome new members to The Explorer's Club.
Charlie, Grover, Rudy, and Abby help Rosita and her abuela plan for a friend's fiesta. While trying to figure out what they need for the party, they try to guess who Rosita and her abuela's friend could be.
When Suki digs up an old bone tool covered with markings, Molly, Tooey, and Oscar discover the playful pooch has made an important archeological discovery. Molly announces a contest to design an original flag for the Denali Trading Post.
Hemingway, having achieved a level of fame rarely seen in the literary world, settles in Key West with Pauline Pfeiffer, but can’t stay put for long. He reports on the Spanish Civil War and begins a tempestuous romance with Martha Gellhorn.