When an industrial complex encounters a disaster such as a terrible earthquake, and so on, it is very important not only to ensure the safety of the plants but also to adjust the operation of the plants flexibly to the conditions of the plants in order to keep the function of the industrial complex as a center of material supply to industries. Because the plants have some functional relations with each other, this study develops an agent-based integrated support system for operation and production planning of several plants. The applicability of the developed agent-based integrated support system is evaluated for several anomalous scenarios. Through the demonstration of the integrated support system, specialists of plants give positive comments. In addition, several topics that should be studied in future studies are revealed for the evaluation and extension of the system.