In 2007 Ae had a recurring role in the television series 9 Ends 2 Out. She starred in the films Sunny in 2008, The Sword with No Name in 2009, and Midnight FM in 2010. From 2010 to 2011 she starred as Yoon Hye-In in the TV series Athena: Goddess of War. Soo appeared in episodes of the TV series A Thousand Days’ Promise in 2011 and Queen of Ambition in 2013. In 2013 she also starred in the film Flu. She won Best New Actress at the Baek Sang Art Awards in 2005 and at the Blue Dragon Awards in 2004. Soo also won Best Actress at the Blue Dragon Awards in 2010 and a Best Actress Awards at the Grand Bell Awards in 2009.