“15 years of madness” is dedicated to 15th anniversary of symphonic black metal band Welicoruss. This documentary shows band from its inception to the present day, including many rare footage, backstages. Video is divided into two parts – in the first part – Alexey, the leader and founder of Welicoruss, and the former members tell what they have come to go through during the Russian part of their biography, and the second period – after Alexey’s relocation to Europe and next studio and tour activities. The film touches theme of development of metal music and metal scene in Russia and Siberia, as well as the reasons why Alexey left his Native Land.