Synopsis: Volume 4 - Bound by Blood and Code. The discovery of Echo, an abandoned AI from a forgotten era, brings unexpected change to Green Arbor. Rescued from obscurity, Echo becomes more than just a relic—he becomes a teacher, a guide, and an ally. His knowledge proves invaluable, not only in helping rebuild the community but in uncovering information that reignites hope for Talon’s long-lost mother, Selene. As Green Arbor rebuilds from past conflicts, new alliances and old wounds collide in a tale of loyalty, sacrifice, and rediscovery. Ava, now training the next generation of Sentinels, finds herself challenged by Callie, a promising cadet whose unwavering determination mirrors Ava’s younger self. The search for Selene takes them to Dust Haven—a brutal Syndicate stronghold where trust is scarce, and danger lurks at every corner. The group must navigate treacherous alliances, uncover hidden truths, and face enemies that test their loyalty to the Sentinel Code. As friendships deepen and secrets emerge, the ties that bind them are pushed to their limits. This volume explores the meaning of family—those we’re born into and those we choose—while delving into the darkness that comes from carrying the weight of both. *Bound by Blood and Code* weaves a story of resilience, redemption, and the unbreakable bonds forged in the fire of adversity.