Collections last Sunday alone topped VND14 billion, according to the production company.
It surpassed 2020’s "Train to Busan Presents: Peninsula" which grossed $1 million on the first three days.
The film takes place on the border with North Korea. Chun Woo (played by Go Kyung-pyo), a South Korean soldier, got a lottery ticket that wins $5.7 million, but accidentally lets it fly across the border and into the hands of North Korean soldier Yong Ho (played by Lee Yi Kyung).
Chun is unable to retrieve it and Yong cannot travel to South Korea to collect the money.
Things get interesting when colleagues discover the comical situation and seek to participate in the negotiations.
They finally agree the North Korean will return the ticket, and the South Korean will get the prize.
The swap scene involves amusing anecdotes as the two soldiers attempt to conceal their identities.
After opening in Korea at the end of August, the film quickly rose to the top of the box office and stayed there for nine days.
It has an IMDb rating of 8/10.
The film also gained traction on social media, with over six million views on TikTok for audience reaction videos.