Some of the school student gets a devil's diary.

When a new app called Echo launches overnight, it claims to “let you hear messages from your future self.”At first, it’s a viral trend — a harmless digital toy.But soon, users start receiving voice notes that predict real events: breakups, accidents, even murders.Aarav Mehta, a 24-year-old coder from Bangalore, downloads Echo out of curiosity — and hears a chilling message from his future self:“Don’t go to work tomorrow. You’ll die there.”At first, he laughs it off.Then the next morning, the office he was supposed to be in explodes.Now, Aarav must uncover what Echo really is — and why it’s sending him messages from a future that shouldn’t exist.