Talk:Baldur's Gate II Chapter 8/@comment-107.9.222.89-20140515185906/@comment-2601:403:C300:95FE:6980:7BB6:2C9D:732D-20190703044710

The pocket plane is serving as a means of transportation that bypasses the army laying siege. You enter the plane, then exit it somewhere else so that you're outside the city.