City of Giants

When your dad is an archaeologist, you spend your summer vacations on a dig. And when a sandstorm hits in North Africa, you take shelter any place you can, including a roped off section of the dig. And if you are lucky, you meet a teenager who happens to be a 5000-year-old remnant from a mythical race of giants. And if you are true to your new friend, you don't tell a soul.