The story starts on the borders of India in 1894, where the Imperial Powers, Britain and Russia are jockeying for influence in the mountain kingdoms beyond the Indian borders. Four children flee a train, wrecked by hostile tribesman and after some harrowing experiences reach the mysterious mountain kingdom of Lashir. Given sanctuary by an itinerant chief, they have to survive internal feuding and tribal warfare while hoping for rescue. It is against that background that Garould and Ernest discover their own strengths and weaknesses; Amelia re-assesses her future and relationships and the three discover the passions and emotions of adult life. Oh yes, the youngest Albert adopts a tiger cub, which also becomes a focal point of opposing factions. All this and 'The Regiment', the icon of the British Army of the Raj, is taking the long march to their rescue - and the Russians!