Japanese American Mika is the newest member of the Lotus Lane Girls, with her very own new diary, but she is still troubled by tensions between her different friends, and worried about her project for the school newspaper.

Bub the pug has never seen snow before, and when Duchess the cat tells him it is frozen rain he is appalled and does not want to go out even to play with his human, Bella--but the week is about to get worse because a new family has moved in next door, and they apparently have a pet monster (at least if Nutz the squirrel can be believed) and Bella's mother has arranged a play date for Sunday.

When their friend Jack cannot join them, Bub the pug and his human, Bella, vow to bring him souvenirs from their road trip, and despite some bumps along the way, Bub calls their trip a big success.

It is Bub the pug's first trip to the beach, and Bella wants to enter him in a pet-surfing contest, but Bub is scared of the ocean and refuses, so he hopes to make it up to Bella by presenting her with the treasure at the end of the map he found.

Bub the pug and his human, Bella, cannot wait to teach Nana's new pup, Harlow, some new tricks, but they soon realize training a puppy is not as easy as they thought.