Ten years after his sister vanished, Luca receives a mysterious letter: she’s alive but will die in 21 days unless he obeys a deadly demand. With time running out, Lucas must decide how far he will go to save her.

When Darcy returns home to look after his estranged mother, he discovers that she’s got an unusual housemate:
the teenage ghost of his pre-transition self. Now, Darcy must face the past or risk losing himself completely.

When an elite class reunion on a luxury high‑tech train is sabotaged, an anonymous “I killed” confession traps the former students in a 100‑hour pressure cooker of secrets. As the past resurfaces, Lara and Aarón must uncover the truth behind a decade‑old death before the engineered journey destroys them all.

The sudden appearance of strange glowing clouds in the sky causes a mass insomnia.