The creators of This is Spinal Tap, the most influential mockumentary ever made, have been paid almost nothing. The rock gods are angry.

Shearer’s suit seemed easy to ignore—a spat started by a habitually argumentative artist. Then, on Feb. 8, he made room for three new co-plaintiffs: Guest, McKean, and Reiner. The band is back together again, and they’re demanding $400 million in damages.