It's 1992 and the summer holidays have just begun.Tom, a schoolboy who lives in the East End of London, is on his way to tea at his grandmother's house when he sees a curious notice at the bus stop. The bus route, operated by a traditional London bus, is going to be extended - to Bangkok!He manages to persuade his aunt, who is looking after him while mother and father are away, to allow him to ride on the bus, and on a Monday morning he sets off...