Happiness S01E01 - Public Rental Apartment

Her friend from high school, Detective Jung Yi-hyun calls Sae-bom to let her know that a SOU recruit, Lee Jong-tae is involved in a murder case that just occurred. It seems Lee Jong-tae gave some sort of drug to his friend who bit off the victim's neck and killed him. Sae-bom, who needs to work hard and earn points to qualify for the public rental apartment, goes out to get Lee Jong-tae despite Yi-hyun's warning.