Applications such as conferences, meetings, lectures, crowd control, search and rescue, disaster recovery, and Army battlefields typically do not have central administration or central infrastructure available.In these situations, ad hoc networks, without any wired base stations. Nodes in such a network move arbitrarily,thus network topology changes frequently and unpredictably. Moreover, bandwidth and power are limited. These constraints, in combination with network topology dynamics make routing in ad hoc networks challenging. In this paper introduces a wireless temporary network without any fixed infrastructure with centralized node called as by-passer. Design a network all the communication between the nodes through bypasser. Implement some predefined text message related to situation and feed all the nodes involved in temporary network, because in emergency situation they don't to talk or type message, they will use the predefined text messages.