In this article, we introduce the context in which the Komagata Maru episode occurred.  We trace the voyage of the Indian emigrants as they tried to enter Canada, but were blocked by various tortuous devices and finally,  expelled by plain force.  We then trace its return to Budge Budge in India (after being externed at various places) and the final tragic fate of the passengers.  Finally, we examine the effect of the Komagata Maru on the various Revolutionaries who raised the standard of revolt during the World War 1 and briefly summarise their attempts and fates.