Enigma's Bae Jingzhou and Alpha's Seo Jung-seok made their debut together when they were young, but they separated due to the conspiracy of others.
Over the years, the two have been torn apart by misunderstandings, conspiracies, and pain. Their love is hidden in their hearts and they dare not speak out.
What will be the ending of this love that started on a rainy day?
"Seo Jung Seok, you broke your promise."
"I'm sorry, I'm sorry, I shouldn't have come back, it's all because of me, Pei Jingzhou..."
Intention: Heavy rain will rain freely
