the x-men and magneto make some peace and come together to beat stryker. the dam is built so that stryker can flood the tunnel if someone comes in. 15 years ago, wolverine volunteered for an experiment and was given claws and suffered a lot of pain. stryker is very interested in wolverine. so mystique, whose power is to make herself look like other people, pretends to be wolverine. she gets in and takes over the control room.