At the funeral of her husband, grandma Xiu-ying looks not sad and even hangs out with her childhood sweetheart Chi happily like a girl. Astonished by her behavior, her grandson Yu-chen and his pregnant wife Jie-ru worry about her and brings her back to Taipei.
After living together, they find Xiu-ying’s memory and behavior even more strange and diagnosed with Dementia. The doctor explains Xiu-ying may fall into memory at any time, so if they want to understand how to comfort Xiu-ying’s fear and aggression, they need to know more about her relationship with her husband or other close males. However, just when Yu-chen and Jie-ru are still busy building their new life and trying to understand more about grandma, Xiu-ying not only attacks her caretaker and insists accompany Chi only.