Kang Tianyang accidentally "picked up" a dirty little thing at the door of his house and took it home to show his mother. The little thing was cute and smelled of orange. Tianyang liked it so much that he begged his mother to keep him...
From then on, this little baby named Xu Zuo lived here. During the conversation on the first night, Kang Tianyang found out that this child with orange scent turned out to be an orange... Orange spirit...?!