Could you handle living forever, knowing you would watch your friends grow old and die? Could you handle loving someone, knowing you would live forever ... without them?

When Marco's immortal father remarried an immortal woman, Marco never expected that their children would develop a supernatural ability: Serafina and Valerius can communicate telepathically. Not only that, but they're hearing telepathic cries for help from someone they don't know. Desperate to conceal his family's secrets, Marco decides to investigate the strength of their abilities by taking Valerius with him on a planned visit to an institution in a distant city.

Soon Valerius reveals that the voice's owner is Sergio, an adolescent who has been institutionalized for most of his life. Tests reveal a family connection to Marco's family, so they decide to have Sergio moved to a spot nearer to where they reside -- but they aren't the only ones interested in Sergio's heritage.