1. An event importance adjustment device, comprising: a digest scenario information storing unit that manages digest scenario information indicative of an event extraction condition, an extraction order and an event importance adjustment point specific to presentation of a course of video contents; and a scenario importance adjusting unit that inputs the event information with importance containing events each indicative of a phenomenon in the video contents and the importance of the event as well as situation information indicative of a situation of the video contents, extracts an appropriate event based on the digest scenario information, and adjusts the importance of the event.