The Bobbsey Twins are Bert and Nan Bobbsey, and they are about 8years old. They have younger twin brother and sister named Flossie and Freddie, and they are about 4. In this book, the Bobbsey family goes to a hotel in Rainbow Valley, which is near the water, and where they can usually see a rainbow. The family has little adventures, like:
On the way to Rainbow Valley, they take a boat. A big turtle comes on their boat and breaks the motor, which stops the boat. A local man in a boat gives them a paddle so they can get to the hotel.
Freddie runs away from the rest of the family, and they set off to find him.
While they are out looking for him, he goes back home. They think they will never find him, but he is waiting for them at the hotel when they get back. They are so glad he’s ok that they don’t punish him for running away.
The hotel has a library, where Nan likes to go and borrow books. The book that she wants is missing and long overdue, so Nan and the librarian try to track it down. While they are looking, they fall off of a cliff! Then they go through the forest and finally find the man who has had the missing book for a long, long time, and they bring it back so Nan can read it.
The kids find a nice bear (named Kate) in the woods. There is a woodsman named Abraham who owns the bear, and the kids find him and give the bear back to him.
Lots of other things happen, which makes the story go by fast. I liked it a lot. The kids seemed like they had fun.