Hay una nueva mascota en el Aula 26: es una rana y se llama Og. Humphrey está deseando hacerse amigo de Og, pero Og no parece interesado. ¡Y, para colmo, los estudiantes están tan fascinados con Og que apenas prestan atención a Humphrey! Humphrey sabe que la amistad puede ser a veces algo complicado, pero si un hámster es capaz de hacerse amigo de una rana, ¡ese es Humphrey!

Og loves the kids in Room 26, but he's awfully curious about the human world outside his tank! His friend Humphrey has no problem getting out and about, but it's harder for Og because he can't climb the way a hamster can. But Og never let hard work or fear stop him from going after what he wants. And he's determined to help the tads in Room 26 understand that taking risks can pay off -- especially when they are being true to themselves. Whether it's...

After the holidays, Humphrey is shocked by a big surprise in Room 26, a new classroom pet! Humphrey tries to be welcoming, but Og the frog doesn't respond to any of his friendly squeaks or visits (remember, he has a lock-that-doesn't-lock). Plus, the students are so interested in Og, they almost stop paying attention to Humphrey altogether. Humphrey doesn't like the mad-bad-sad feelings he's had since Og came, but luckily he still gets to have adventures...