In episode 15 of the movie "Countdown Clock", Thanh (Thanh Son) happily sits and reviews the album of commemorative photos. When he sees images with Chi (Hoang Ha) when he was young and teacher Thanh (NSND Trung Anh), Thanh suddenly realizes that the tasks assigned to him by the god of death are all related to the people present in this commemorative album. And the last person to appear in Thanh's album is also his mother.


When he realized this, Thanh talked to his mother and asked her directly about going to his mother's hometown. "Now I'm also grown up. How many times in recent years has my mother gone 1-2 days and then returned to my mother's hometown, right? How many times has my mother gone back to her hometown and lost 1-2 days? Is there something that for so many years I couldn't let go of?", Thanh asked.
Hearing Thanh ask, Thanh's mother revealed for the first time that she had made a very big mistake in the past and was afraid of not being forgiven.
Thanh brought the childhood image of his mother and asked Chi to restore it. After restoring, both discovered that there was still a hand of a man in the photo. "I still think it could be your father. And the final task will be to find his whereabouts," Chi said.

When Thanh thought that the dead could not perform their duties, Chi thought that Thanh's father might still be alive.
Film "Countdown Clock" episode 15 airs at 8:00 PM on VTV3.