심장이 뛴다

A story about a young man who, after a failed operation to save a friend, becomes a heartless killer. He meets a woman who reminds him of his past, leading him to question his life and choices. Their relationship becomes entangled with a dangerous world of crime and betrayal, forcing them to confront their destinies.

While "Heartbeat" was noted for its ambition and the performances of its lead actors, it received a mixed reception from critics. Some praised its stylish direction and intense action sequences, while others found the plot predictable and the characters underdeveloped. Audience reception was similarly divided, with some appreciating the emotional core of the story and others criticizing its pacing and narrative coherence.

• Praised for its visual style and the chemistry between the lead actors.
• Criticized for a somewhat convoluted plot and underdeveloped supporting characters.
• Seen as an ambitious, albeit flawed, attempt at a stylish crime thriller.

Google audience: Information on specific Google user reviews and summaries for this film is not readily available in English-language sources.

The film marked a significant dramatic turn for lead actor Lee Joon, who was previously known for his roles in idol groups and lighter fare.