Recently, dynamic content, whose construction is changed dynamically according to an user's request, has been wide-spreading. Since many kinds of dynamic content are served from the origin servers, it is more difficult in general to improve a responsiveness of dynamic content than static one that can be cached at a location close to users. This paper proposes to cache such dynamic content to improve its responsiveness, and describes the design and implementation of our proposed innetwork cache system which can pre-fetch and cache dynamic content near users.