Mai Ding and An Zi Yan are now an established couple and decide to go on a holiday in the seaside area of ​​Sanya. During the trip they meet a homosexual couple not too dissimilar from theirs with whom they will make friends. During the holiday it will be a little frequent and it will emerge that the two of the couple have married. This will mean that once they return to their home, Yan will also offer an engagement ring to Ding to symbolize their love.