A group of friends must band together to solve a mystery on a train.
Sarah, James, and Mike were ecstatic about the long-awaited trip they had planned, a train ride on the historic Orient Express through the stunning countryside. The day finally arrived, and they boarded the train, eagerly anticipating the breathtaking views and the luxury of sleeping in cozy, comfortable cabins. 

As they settled in, the trio noticed an eerie feeling settle over the carriage, a sense of unease that none of them could explain. During dinner, they overheard a conversation between two passengers in the next compartment that made them shudder. They were talking about a passenger who had disappeared under mysterious circumstances on the previous trip and never returned.

The train steamed on through the dark night, and as they slept, Sarah was stirred awake by peculiar sounds coming from the hallway. She poked her head out to investigate and saw a figure darting down the corridor, seemingly trying to sneak past her cabin.

Sarah woke James and Mike, and they decided to investigate the mysterious figure. They followed the direction the stranger had taken and found themselves in a dimly lit storage room at the end of the train carriage. 

They spotted something peculiar in the corner of the room and went close to have a look. It was a chest wrapped in thick chains and padlocks. They noticed light shining from within the cracks, and it only fuelled their curiosity. They set out to unlock the chest and found a map with a riddle written in code hidden inside.

They realized that the riddle was somehow linked to the disappearance of the passenger, and they set out to crack the code. Using all the skills they could muster, they managed to decipher the riddle and found themselves staring at a secret compartment that opened by speaking the password.

In the compartment, they discovered cryptic notes about a treasure that was allegedly stolen and hidden on the train. As they tried to make sense of the clues, they soon realized that there was someone else on the train searching for the treasure, and they were not alone.

The trio needed to work together to find the treasure and solve the mystery of the missing passenger, but with only a few hours left on the train ride, they knew they had to act fast. In a nail-biting ending, the group races against time to uncover the missing treasure and its secrets, and ultimately solve the mystery of the missing passenger before the journey comes to an end.