In a world where heartbeats are the currency, 18-year-old Juliet is trying to save a friend from a lifetime of heartbeat debt. When her father, head of the powerful heartbeat debt company, refuses to remove the debt, she seeks help from Romeo, an underground hacker.

A drug that turns people into killers, a Techno-Viking going berserk, crazy scientists playing God, and an assassin bot tired of its job.