While flipping through Grandpa's photo album of his childhood days, Aloysius and Grandpa are magically transported to 1900s Singapore. Aloysius, having grown up in a world of iPhones and movie theatres, finds himself in a foreign land, where cinemas travel around on wheels and letters take two weeks to arrive!

With Grandpa as his tour guide, Aloysius travels around olden Singapore and meets traders who once did a roaring trade—and provided invaluable service to their communities—but are now vanishing. What else will Aloysius discover during this journey? How will experiencing the past change Aloysius? Will he find out how naughty Grandpa was at his age?

Join Aloysius and Grandpa on a zany journey to the past! Just as Aloysius and Grandpa were transported through their book, Once Upon A Singapore… Traders will bring you on a fantastic and colourful ride as you get to meet the traders who are still remembered fondly by generations of Singaporeans today.