Although they are unharmed the knowledge and secret gained from that visit will remain with them.
The secret becomes a burden at times and although they have have never shared it, others are suspicious and attempt to find out what they are hiding.
Their arch rivals, Wincey (Luke) Williams and Snitch (Cyril) Johnston will stop at nothing; including sabotage, to discover their secret.
Their adventures as they dodge their enemies are are at times funny, always exciting and occasionally life threatening.
But the biggest threat of all is totally unexpected, their life long friendship is tested