Submarine Adventure

There was acave ahead of them. The sabmarine was heading for it.

Today, I read Submarine Adventure. This book was written by Roderick Hunt.There are four children in this story. One day, Wilf and Wilma come to the Biff and Chip's house to celebrate Wilf's birth day. His birthday present is a kind of submarine. 

Suddenly the magic key begin to glow. Then, it is time for a new adventure!!

What will happen to them? You should check this book!