When Resus gets a letter from his new pen pal in the Underlands, Luke and Cleo are suspicious. They know the Brain Catcher is trying to escape the Underlands again - so are these two things connected?

When Luke's skateboard lands in goo from the Underlands, it develops a thoroughly evil mind of its own! But it seems it's not the only thing to be affected - Can Luke and the others stop the goo turning all objects evil?

A lucky leprechaun head brings Luke all the luck he needs, but at a cost - everyone else now has bad luck! Luke must put everything right or he will be cast out from Scream Street.