Krithyam movie (Pavithra) is about Sandra Punoos, the daughter of a multi millionaire, is a wannabe writer of crime thrillers with a troubled past. She lives with caretakers Solomon (Jagathy) and Victoria ( Kalpana). Her best friend among many friends, is Lavanya with whom she shares everything.
Once, after a queer road accident, she comes to know that she is terminally ill with some indescribable problem in her brains. Unable to bear the ultimate reality, she hires a professional killer Christy Lopez (Prithviraj) through the Internet to end her life.