On a snowy day, the abandoned little boy accidentally became the son of the Tang family. As a result, everyone knew that the Tang family had received a pair of twins, a boy and a girl, that midsummer.
After the two learned about this secret that was kept secret by their families, the love that had been suppressed by family affection poured out like a powerful beast.
It turns out that everything happens for a reason, and the heartbeat that had been accumulated inexplicably turned out to be the surging love buried in the blood.
Concept: Two people develop feelings for each other after learning that there is no fetters of family ties.