The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
We have requirements to get the list of issue type (Story) which are blocked /dependent on Stories
List of stories which is blocked by stories
List of Stories which is dependent on Defects
List of Defect which blocks the Stories
There are some plugins that have those capabilities: Links Hierarchy , Links Explorer , ...
Please note that there is currently a problem with the marketplace (see http://status.atlassian.com/ )