When a Slovenian teenager sneaked into Austria in 1956, it was the start of an epic journey to Canada that almost ended before it started. First, young Ivan Letnik had to overcome cancer. Landing penniless the next year in Toronto, he worked his way up from golf-club dishwasher to greasy-spoon proprietor. Building on success, this non-stop worker bought the Normac, a former Detroit fire tug, and turned it into a floating restaurant on the barren...