It\u2019s a once in a lifetime moment \u2013 when you first go travelling. No mum and dad \u2013 and the world\u2019s your oyster. But what if it all goes wrong? From missing trains and losing passports to getting injured and facing an operation in a foreign country, Laura meets three teenage travellers who had a pretty traumatic time, but lived to tell the tale and plan some future overseas adventures.