At Waterloo Station, hopeful new arrivals from the West Indies step off the boat train, ready to start afresh in 1950s London.

There, homesick Moses Aloetta, who has already lived in the city for years, meets Henry 'Sir Galahad' Oliver and shows him the ropes. In this strange, cold, and foggy city where the natives can be less than friendly at the sight of a black face, has Galahad met his Waterloo?

As pessimistic 'old veteran' Moses watches their attempts, they gradually learn to survive and come to love the heady excitements of London.