Pui Ying has memory problems as she gets older and older. She lives with Sandy who gives her so much patience and affection that she is happy every day. Yet she feels sad sometimes when her memory becomes sharp unexpectedly.

Sandy has always been a little best friend with “Grandma” since she was small, her biggest wish is to stay with Grandma till the end of Grandma’s life. She enjoys being with Pui Ying every day, although she is a bit down every time she is with her.

Will she free herself from her regrets in this complicated relationship and sentiments?