But once inside to find survivors , the primary Go - Busters find most of the humans being assimilated into the building 's structure with only two children spared .
Eventually , the group learns that Enter merged into an Enetron tank to convert it into a cocoon .
Once inside to find survivors , the primary Go - Busters find most of the humans being assimilated into the building 's structure with only two children spared .
Eventually , the group learns that Enter merged into an Enetron tank to convert it into a cocoon .