On a train traveling through pre-World War II Europe, a group of passengers finds themselves trapped in an unusual journey. Among them is a young journalist named Iris, who strikes up a conversation with the eccentric and charming Mrs. Froy, an elderly traveler. Everything is going smoothly until, suddenly, during a stop, Mrs. Froy mysteriously disappears. Iris cannot believe that no one else seems to remember the old woman, and when she seeks answers among the passengers, she realizes that everyone appears to be hiding something.
Determined to unveil the mystery, Iris embarks on an investigation that leads her to form an unexpected alliance with a young man named Gilbert, who also begins to suspect that something is amiss. As the plot thickens, the atmosphere becomes increasingly tense, with twists and surprises that keep the viewer on the edge of their seat. As Iris and Gilbert delve deeper into the enigma, they face a conspiracy that reveals the dark background of Mrs. Froy's disappearance and the urgency to seek justice before it's too late.
This thrilling narrative combines intrigue, suspicion, and a touch of romance, as the characters struggle to discover the truth in a world where nothing is what it seems. With a breakneck pace and a clever script, the story explores the fragility of trust and the power of friendship in critical moments.