To Save the Last in Bloomington, MN

When 16 year old Lex asks "What if the last Tsar and his family had escaped from Russia?", her science genius friend Lindsay begins to formulate an answer. Flashforward two years. Lindsay invents a device to travel back in time. Two daring girls, one family in peril, one chance to change history. Will it work? Will they be able to pull off the biggest rescue in history?