"Oh! My Gran" is a classic heart-wrenching movie with a twist of justice.

Nowadays, almost every movie with the synopsis of dementia on elders, it'd almost a guaranteed hit on the tear-jerking genre. Well, it's not wrong. But add the plot with a time constraint, say there's a criminal on loose who's getting away as day passes. Then, stack it up with comedic moments of misery that elder with dementia could cause, and serve it up with those bubbly backstories that add to sentiments.

At the end of it, you've got a korean movie that dances around your smiles and tears, tugging your heart along for the ride.

And that's "Oh! My Gran".