Acts of bravery in your dream tap into the archetypal hero and, if they appear in your dream, your unconscious is urging you either to accept help when it is offered or to discover courage within yourself. In other words, your dreaming mind is urging you to find the hero inside yourself.... The Element Encyclopedia
If you dream that you are held captive, you may be controlling some aspects of your psychological dimension too much. Perhaps, you are preventing your self-expression or feel prisoner of your circumstances. You may also be rejecting your hidden potential or your true feelings. The cause can be that you have to face a new job, marriage, birth of a child... In any case, these things, for worse or for better, restrict your freedom. On other hand, maybe you need to show that you dominate others, especially your family and friends. You force them to act according to your will. Clearly, in this way, you will never reach happiness.
Dreaming that you are bound up expresses you will harvest love in your life.... The Big Dictionary of Dreams
Slavery is a cultural institution, and as such, in a dream it represents a pervasive atmosphere in which one element of your consciousness holds another element of your consciousness back, so much so that you are unable to function properly. Such a dream may be asking you to examine your ideas that are more rigid than is beneficial to you.... Complete Dictionary of Dreams