After a sudden downpour in the park, caregiver Shelly accidentally wheels home the wrong person — only to find she has brought back a grumpy, uncommunicative grandpa instead of her client. As she scrambles to switch them back, the grandpa refuses to go home.
Watch the official When Grandma Becomes Grandpa 2026 trailer in HD below.
Love Fang as Shelly
Jieh-Wen King as Grandpa Jin-Fa
Peace Yang as Mrs. Wu
Chen Zhao Fei as Elder Daughter
Teng-Hui Huang as Grandpa's son's voice
Sharon Wu Director
Sharon Wu Writer
Yao Hua Ku Director of Photography
Milk Su Editor
Wei Chung Chen Production Design
China 10 September 2026
Taiwan 27 June 2026
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Have you watched When Grandma Becomes Grandpa yet? What did you think about it?