D-Day, June 6, 1944: the most expansive military endeavor in history. No less than world cooperation would bring down Hitler and the Axis powers. And so people - and kids - across the globe lent their part. From the young US soldiers in the boats to spies in the French countryside, the coordination of thousands came together. Alan Gratz, author of the New York Times best-selling Refugee, explores the necessity of teamwork and heroism in dismantling tyranny in this epic, yet personal, look at D-Day in time for the 75th anniversary of the operation.

This timely and powerful novel tells the story of three different children seeking refuge. Josef is a Jewish boy living in 1930s Nazi Germany. With the threat of concentration camps looming, he and his family board a ship bound for the other side of the world. Isabel is a Cuban girl in 1994. With riots and unrest plaguing her country, she and her family set out on a raft, hoping to find safety in America. Mahmoud is a Syrian boy in 2015. With his homeland torn apart by violence and destruction, he and his family begin a long trek toward Europe.

September 11, 2001, New York City: Brandon is visiting his dad at work, on the 107th floor of the World Trade Center. Out of nowhere, an airplane slams into the tower, creating a fiery nightmare of terror and confusion. And Brandon is in the middle of it all. Can he survive - and escape? September 11, 2020, Afghanistan: Reshmina has grown up in the shadow of war, but she dreams of peace and progress. When a battle erupts in her village, Reshmina stumbles upon a wounded American soldier named Taz. Should she help Taz - and put herself and her family in mortal danger?

December 6, 1941: Best friends Frank and Stanley have it good. Their dads are Navy pilots stationed at Pearl Harbor in Hawaii, and the boys get a front-row view of the huge battleships and the sparkling water. Yes, World War II is raging in Europe and in Asia, but the US isn't involved in the war, and the boys are free to dream about becoming comic book creators. They've even invented a superhero of their own, in the style of Batman, Superman, Captain America, and other stars of the Golden Age of Comics. December 7th, 1941: Everything explodes.

Evie can't believe she's made it to the 1936 Berlin Olympics. After fleeing the Oklahoma Dust Bowl for golden California, Evie's family is still poor and reeling from devastating losses. She could have never guessed that the sport she took up to escape her reality would lead to this. Now, she's competing in gymnastics on Team USA, with some of the greatest athletes in the world like track and field star Jesse Owens. But all is not as it seems in Berlin, a city now ruled by the Nazis and their tyrannical leader, Adolf Hitler.