The protagonist is an ordinary office worker who lost his wife in a subway arson incident three years ago and has been raising his 15-year-old daughter alone.

One day, out of nowhere, he receives a photo of his kidnapped daughter through a messenger app.

Flustered and not knowing what to do...

At that moment, a message comes from his deceased wife's messenger account...

In a messenger-style gameplay format, 

you will converse with virtual characters and must successfully overcome the phishing dangers that the protagonist encounters.

Through the game 'Blue Messenger,' you can indirectly experience phishing 

and learn to handle real-life situations wisely.