Maggie and James are good friends so when Maggie finds a trapdoor, she shows him. They decide to see where it leads.
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When they follow the staircase down, they meet two children there and their adventures begin.
They learn there is another world beneath theirs. They go with the children they met and find that they have good food and tasty drinks. There's also a danger there. They could get captured and be given to the ogres as slaves. They manage to stay safe but one of their new friends gets captured.
They agree to help get the ones stolen back. Maggie finds she can talk to animals. The help them get where they need to go.
It's dangerous but they don't run. They use the skills they have to try to rescue them. Will they be successful?