Cookie piece

Intro:the story starts with a group of three male cookies,gingerbrave,wildberry and crunchy chip. They are the envois,friends and comrades of the ancient heroes(well,except for golden cheese and white lily)they were chatting and having a great time when they heard an explosion! they decided to check it out,upon arriving it. They saw a portal from another dimension,many strange people in white with swords and guns were searching the area,capturing any cookie in sight! the three friends decides to report this to the ancient heroes. What happened to create a portal from another dimension? are those strange people friends/allies or foes?