What if you woke up one morning and the digital world claimed you no longer existed?Sixteen-year-old Mila Verhaeghe discovers that her accounts, messages, and school profile have vanished. Then deepfake videos of her appear online. Everyone watches. Everyone judges. No one asks whether it is real.With help from Noah, a boy without a smartphone, and Sami, an activist with more evidence than trust in systems, Mila uncovers the truth behind ECHO, a school app that claims to protect students while quietly learning how to control them.To get her life back, Mila must do the one thing that seems impossible: disappear offline in a world that sees everything.