This is the first of a series of video lessons that is targeted towards advanced learners of Mandarin who are planning to use Mandarin in business settings.
In this scenario, a young man working in marketing is sent on a business trip. He is reminded that a few years ago, he, still a relatively inexperienced businessman, attended an expo and met someone who was later a big help to him professionally. Today, because of the business trip, he has by chance come to the city in which the person who was a big help to him currently works and resides, so he specifically uses this chance to visit.