When his 69-year-old grandfather was critically ill, he traveled through time and became his 29-year-old grandson.
He cleans the house for the grandson of a sloppy programmer, and gets closer to his neat roommate Zhang Wei.
"The crescent birthmark under your collarbone is exactly the same as my late wife's."
Zhang Wei was shocked: "How do you know this secret?"
Grandpa was about to tell the story of forty years ago when his body was suddenly taken back by his real grandson.
Li Ming stood at the door with a beer and looked at "himself" affectionately: "Damn, what's going on?"
