We've been obsessed with immortality for centuries. The fact that we believe in Jesus Christ's resurrection, reincarnation, and afterlife tells us that we, people, do fear death and the unknown beyond it, and, having gotten used to the life's charm, would like to prolong our stay on Earth as long as possible. This leads us to the pursuit of life eternal. Imagine people who never die, but heal from every wound and every excruciating unsurvivable crash. Imagine a team of such individuals who meet at some point in history to work together. What can be done with such potential? Is the mystery of immortality reserved for the few selected or should it be available to everybody? Is eternal life possible without pains of the hostile world or does it lead to loneliness and abandonment? And is there really something like a bottomless well of life energy or there's an end to everything? The Old Guard.