Award-winning authors David Bowles and Guadalupe Garcia McCall join forces to craft a sweeping fantasy romance about falling in love despite all odds.In modern-day Mexico, Sitlali has no family left and has caught the attention of a dangerous gang leader. She has no choice but to make the perilous trip to the US border and track down her long-absent father. The night before her journey, she finds a beautiful conch shell detailed with ancient markings.In 1521, Calizto is an Aztec young warrior in Tenochtitlan, fighting desperately to save his city from Spanish imperialists. With his family dead and the horrors of war surrounding him, Calizto asks a sacred moon conch for guidance.Connected by the magical conch, Sitlali and Calizto can communicate across centuries, finding comfort in each other as they fight to survive. With each conversation, they fall deeper in love, but will they be able to find a way to each other?