They spent their childhood summers together near the Caspian Sea, but Nadezhda and Alla lost touch, and it was only twenty years later that Fate re-united them. By then, Alla had suffered a devastating loss of her family in the Russia-Chechnya war, and had been recruited for a mission of revenge. Their friendship re-kindled, the two women share a Moscow apartment and find their lives entwined in unexpected and dramatic ways. Can a friend also be an enemy? This is a story of how Nadezhda and Alla--'almost sisters'--confront secrets, family losses and terrorist misadventure, and discover the limits and ultimate sacrifices of their friendship.