Disaster at Gogo's spaza

Tumi visits her Gogo in Soweto for the holidays. She and her twin cousins often help Gogo in her spaza shop. Gogo's Goodies is the oldest spaza in all of Soweto and Gogo's pride and joy. When Gogo leaves for a few days, Tumi has one of her crazy ideas: They will open the shop and run it themselves and earn loads of money! But they've never had to do it without Gogo, and things quickly get out of hand, making the spaza more famous than ever . . .