After five years in prison, an insignificant security guard transforms into an unparalleled expert. On the day Yang Xiao is released from prison, he learns that he actually has an adorable daughter. It turns out that five years ago, on that fateful night, he had an encounter with a stunning female CEO... Amidst the surprise, a dreadful news strikes. His daughter has been secretly harmed and is now suffering from a terminal illness. A massive conspiracy is silently unfolding.