As soon as I cleared airport security, I went to the nearest restroom, got into a stall, and locked the door behind me. As instructed, I put on my steel chastity cage, turned the key to lock it, and sent a picture to Master Ben. I then filmed myself flushing the key I had used to lock myself, trapping me in the cage for now. My master has the only other key, and he's over five-thousand miles away on another continent...
It had been barely 3 months since I started speaking with Master Ben - he presented himself as a strict but sensible master, with an urge to train & teach new subs how better to serve their superiors. Something about the messages he wrote, and the tasks he made me do make me tingle with anticipation and (good) fear. After less than a month chatting, he asked for control of my chastity keys through Chaster, to allow him to keep better control over me; naturally, I was blinded by my own lust and clouded by the sheer amount of desperation I had built up over 6 weeks locked prior to this, so I agreed. I have been locked in my cage since then, only being released temporarily for cleaning and travel.
I boarded the plane, fully feeling the weight of the steel cage locked around my cock and balls. I got to my seat and settled in for the long transatlantic flight to my Master's local airport. The rumble and vibration jostling my cage during taxi & take-off only serving to remind me that I had locked up my manhood and thrown away my only key, for a stranger I had met on the internet and never seen/met in person; and I was now flying to meet them, hoping for release!
Around 30 minutes after take-off, I noticed that the in-flight Wi-Fi had been turned on; I connected and checked my messages - "Telegram: 1 New Message" - it was from Master Ben. I opened the app and read his message:
"Hello Sub. Online now? It looks like you took off on time and you should be cruising now."
"Yes Master, only just online." I replied. "How can I serve you, Master?"
"Go to the toilet, now." he ordered. "Take the diaper from your hand luggage with you."
I did as he ordered: got up from my seat, fetched the diaper from my rucksack, and picked one of the plane's toilets to hide in for now, making sure to lock the door behind me.
"I'm in a toilet, Master. I have the diaper with me." I message.
"Good boy. Now, strip and show me that shiny cage!"
I do as I am told and send a picture of me naked in the plane's toilet.
"Very good! Put on the diaper and re-dress. You'll be wearing that until you're picked up from the airport." he declared.
"But Master, that's going to be at least 5-6 hours?!"
"That's right, sub. At least you won't need to queue for the toilet for the rest of the flight!"
"Understood, Master." I typed, immediately defeated - arguing would have just made things worse. I sent him another picture of me in the diaper, and one showing it under my clothes. I returned to my seat, slightly waddling and crinkling as I walked down the aisle.
"Enjoy the rest of your flight, sub! I must go now, but there will be someone waiting to pick you up when you land. You'll be able to figure out who is there for you ;)" he messaged. What did he mean by that? I tried not to concentrate or worry too much; it was far too late to turn back now. I replied with a "Thank you Master. See you soon." and settled in for the rest of the flight.