Orphan Ah Young is a financially struggling 23-year-old who takes care of her 8-year-old sister Dan Bi while juggling part-time jobs. One day a 28-year-old man Yoo Sang appears in front of Ah Young offering to be her dad through a signed agreement.
Lee Hyun-joo
Kim Ah Young
Choi Kyung-hoon
Sul Yoo Sang
Lee A-ra
Kim Dan Bi
Min Se Woong
Yoon Joo Ho
Kwon Hae Woo
Yoon Hae Woo (Yoo Sang's Secretary)
