Complex sentence: On December 5, she joined the cast of KBS weekend drama "All About My Mom", starting from episode 33, as Go Aeng-doo, a pretty and innocent, yet mysterious young lady.
Split into simpler sentences: On December 5, she joined the cast of the KBS weekend drama "All About My Mom", starting from episode 33. She played Go Aeng-doo, a pretty and innocent, yet mysterious young lady.