Watch: Hong Seung Hee Transforms into Jung Yong Hwa's Drama Character in 'Oh! My Guard' New Teaser

The upcoming romance drama “Oh! My Guard” has released a new teaser, and it turns one woman’s fangirl obsession into a full-blown identity crisis.

According to Soompi, the drama stars CNBLUE’s Jung Yong Hwa as Uhm Tae Bong, an A-list actor with a fatal flaw, and Hong Seung Hee as Oh Hae Ra, a mysterious woman who believes she is Cha Hong Doo, the female lead of his drama.

The teaser opens on Oh Hae Ra as a chaebol heiress before her accident, when she is still aware of who she is. A die-hard fan of Uhm Tae Bong, her room is filled with her favorite actor’s photos and merchandise. In voice-over, she says, “I want to love [someone] in real life the way they do in dramas.” Then, after getting hit by a car, Oh Hae Ra wakes up with all of her memories gone — and convinced that she is Cha Hong Doo, a bodyguard character skilled in combat from one of Uhm Tae Bong’s dramas.

Because Cha Hong Doo is a fighter, Oh Hae Ra leaps into action to protect Uhm Tae Bong, bursting onto his drama set to fight off anyone attempting to hurt him. A confused Uhm Tae Bong asks Oh Hae Ra who she is, before finding out to his horror that she really believes she’s Cha Hong Doo. As he struggles to adapt to her following him around everywhere, someone warns him that “the scariest thing in the world” is “kids who aren’t right in the head.” Another voice declares, “For the time being, let’s play along with what that woman wants to believe,” only to be met with the reply, “Is this ‘The Truman Show’? You want us to shoot a drama for her?”

The teaser ends with glimpses of a romance developing between Uhm Tae Bong and Oh Hae Ra, as he says in confusion, “I, too, really have no idea why I’m acting like this.”

“Oh! My Guard” will premiere on October 24 at 10:50 p.m. KST.