The Silver Sword (TV series)

WARSAW 1942 On a cold, dark night in Warsaw in 1942, the Balicki children watch in horror as Nazi Storm Troopers arrest their mother. Now they are lone. With the war raging around them, food and shelter are hard to come by. They live in constant fear. Finally, they get word that their father is alive. He has made it to Switzerland. Edek and Ruth are determined to find him, though they know how dangerous the long trip from Warsaw will be. But they also know that if they don't make it, they may never see their parents again. Their gripping story is taken from actual accounts - IMDb