Even the simplest act of kindness can motivate others to pay it forward.
In the short film above from Viddsee, entitled, "Ripple," a little girl picks out a cake in a grocery store for her grandfather's birthday. At the check-out line, her grandmother realizes she can't afford and they are forced to leave the store without the treat. But a man in line behind them decides to buy the cake, and what unfolds is nothing short of beautiful.
Watch the story above -- it's a testament to how far a little goodwill can go.