This is The Lion, The Witch and The Wardrobe.
This is my 2nd favourite Narnia book. So let me make something clear: My favourite character is Susan Pevensie. Anyway, this book was set in the II world war in London. The mains are The Pevensies; Peter, Susan, Edmund and Lucy. Peter is 13, Susan is 12, Edmund is 10 and Lucy is 9. Their mother sent them to live with old Digory Kirke. When they explore the house the come across a rrom with only a wardrobe with a dead blue bottle fly on the window sill (Honestly Edmund, you had to point it out?!). When the rets leave Lucy's curiousity gets the best out of her and she looks inside the Wardrobe and finds Narnia. She meets Mr Tumnus the faun. After Mr Tumnus confides in Lucy that he's supposed to kidnap every Son of Adam and Daughter of Eve (Humans). Mr Tumnus leads Lucy home and she runs after her siblings. Now in Narnia it had been hours. In our world, however, it had been a mere second! No-one will believe Lucy's 'story'. Next the play hide-and-seek and Lucy goes straight to the Wardrobe room and goes in the Wardrobe. Edmund follows and does the same and MEETS THE WHITE WITCH!!!!!!!!!!!!!!!!!!!!! She enchants him with magic turkish delight that whoever eats it will want more and more of it. The rest still don't believe Lucy..........................Until they all end up in Narnia and meet a beaver who takes them to see Aslan the great creator of Narnia. Quietly Edmund slips out to seek the Witch. Wrong move Ed! After Peter, Susan, Lucy and the Beavers arrive at Aslan's camp a wolf from the White Witch attacks Susan and Lucy and Peter saves them by defeating them. When the Witchn hears she is furious. After Edmund is returned to the Pevensies Aslan makes a deal with the Witch that instead of Edmund dieing, it's Aslan. The Witch kills Aslan and declares war. After the sun rises, Aslan comes alive again and defeats the Witch. The Pevensies become Kings and Queen at Cair Paravel for 15 years, untill thye blunder back to London hunting the White Stag who gives you three wishes if you catch him. It had been a minute in our world so instead of Kings and Queens of the age of 28, 27, 25 and 24 but kids at the ages of 13,12,10 and 9. They're baffled. Anyway, I like this story because it's full of adventure and loyalty (sort of).