Taeyeon is an author, she wrote mystery and horror story. She’s in a relationship with Hwang Group’s daughter, Tiffany Hwang. Taeyeon used to be a sweet lover, someone that Tiffany could lean on. But after Taeyeon got fame, she changed to someone that even her own lover can’t recognize her. Taeyeon was rude, arrogant, impatient. Ever since she received a task from her company to make a novel about Parallel world she locked herself inside her room completely abandoning Tiffany. Taeyeon only came out when she had to meet her investor which end up with Taeyeon getting home drunk. Tiffany was frustrated, her friends told her to leave her Kim Taeyeon but she’s not strong enough to make that decision, she just hope there’s a miracle that can bring her sweet TaeTae back.

In the real world, Sunny and Sooyoung are her good friends but both of them hate each other, they used to date but broke up after realised they can’t stand with each other. Yuri is Taeyeon’s enemy, former friend of Taeyeon, let’s just say Taeyeon sabotage her? Yoona is Taeyeon’s favourite dongsaeng, a struggling actress since her drama not really hit the expectation. Seohyun is Tiffany’s secretary, very close to Tiffany like a real sister.

Now, back to Taeyeon, what will happen when fate decided to play on her? What happen when Tiffany can’t recognise her?