What is Pre-packaged Insolvency?

Legal Definition
Pre-packaged insolvency (a "pre-pack") is a kind of bankruptcy procedure, where a restructure plan is agreed in advance of a company declaring its insolvency. In the United States pre-packs are often used in a Chapter 11 filing. In the United Kingdom, pre-packs have become popular since the Enterprise Act 2002, which has made administration the dominant insolvency procedure. Such arrangements are also available in Canada under the Companies' Creditors Arrangements Act.
-- Wikipedia