The Last Days of Lorien is the fifth book of The Lost Files. It follows Sandor, as a teenager who is unsatisfied with living in a false paradise and as a "boring Cêpan." This causes him to break rules and get into trouble frequently. But one day his troubles come back to bite him. Sandor was tired of being a teenager, tired of going to school and obeying his teachers and playing by his parents' rules. He enjoyed breaking the rules rather than following them. But when he makes one mistake too many, Sandor's life takes an unexpected turn, and he is forced to join the Lorien Defense Academy.