Tae Yang and Jin Shim are best friends living in poverty. Jin Shim's parents abandoned her at birth, and Tae Yang's father left him and his younger sister, Tae In, with their maternal grandmother, too. Jin Shim becomes best friends with Ga On, who is being raised by her mother but is the daughter of a chaebol. Her father, who recently divorced, plans on coming back to Ga On her mother. Tae Yang is in love with Jin Shim and prevents her from getting an urgent message from Ga On one day. On that day, Ga On, waiting for Jin Shim (who has no idea about it), gets chased by a couple of strange men and falls to her death. (Source: Dee at MyDramaList)