1958
Larry Johnson is born
   1974
Rolf Willburg is born, he is given up for adoption by his father John to the Tompsons immediately after birth.
   1984
John Willburg breaks into the Johnson house and kills Larry's wife Mary during the roBbery attempt. Larry loses it after seeing her death and brutally murders John. Larry is put into EverLove mental institute. He never spoke again. A visiting friend gave him a clown mask on halloween as a present.
   1989
After 5 years of the institutes inhumane 'treatments' Larry Johnson escapes, killing six workers and several inmates. Wearing his mask he made his way back to Calgary, killing  twenty people there.
   1990
A group of satan worshipers who followed the 1989 massacre start up a cult for those who love Larry Johnson They give him the name Bo-Bo.

1992

After 3 years of living in an abandoned house just out side the city, Larry returns to the city to
punish those who have made him suffer - all humans.
Accidentally leaving his Mask behind while eating a dead
cat, Rolf Tompson drives by and finds it. He thinks nothing of the mask, and simply puts it in his car and goes to his friend's house to play a game of poker. Later on in the night he shows the mask to his friend Terry. While Rolf is in the house Bo-Bo steals the bag containing the mask and rolf's work clothes out of Rolf's car...
 
 

Bo-Bo has started another killing spree. While passing the old bingo hall he attacks his first victim, Boots, who was supposed to be at the poker game Rolf just came from...
 
 

Bo-Bo continues to track the scent of Rolf, and it brings him to Terry's house, who gets a knife in his head...
 

While on his way home Rolf sees Bo-Bo for the first time, seeing that he has the mask, and his clothes on, Rolf gets out of his car to confront Bo-Bo. A fight ensues, and Rolf escapes proving he is a worthy adversary...
 
 

When Rolf arrives home he realizes that he has for got his keys, and has to make new sleeping arrangements for the night, he parks his car in a near by parking lot to get some shut eye... His sleep is soon interrupted when Bo-Bo breaks open his car door to kill him. Using his car as a weapon Rolf escapes again, not knowing what to do he drives out of town and parks in the darkness on the side of the road some where.
 
 

When he awakens he sees that he has parked near an old abandoned house... he goes in in hopes of finding a phone, but he finds Bo-Bo, this is his home. As rolf fights for his life dodging axes, and Bo-Bo's fury, he manages to escape again.. driving off to the city to find out what this is all about.
 
 

Rolf makes his way to the city library and finds a book about Calgary crimes in the 80s, written by a detective Cheenkaw.. Rolf finds out who Bo-Bo really is, and plans an attack.
 
 

Bo-Bo has started his journey back to Calgary by now, and has already brutally beaten to death a man who has the misfortune of crossing paths with Bo-Bo under a bridge on the outskirts of town.
 
 

Rolf goes to his friend Terry's house to see if he can help, but he only finds a corps.

Meanwhile Bo-Bo is causing more terror. It is Halloween night now, and he is praying on the unfortunate souls who partake in this holiday... He breaks in to the home of two more of Rolf's friends, Curd, and Begal. He breaks Curd's neck and stabs Begal in the gut....
 
 

He then goes to home of the rock star Joey Spit, and whacks him over the head with his own guitar...
 
 

Knowing that Bo-Bo has been seen at the head stone of his wife Mary on previous Halloweens Rolf heads to the cemetery in a final attempt to stop this mad man, and avenge the deaths of his friends... a fantastic battle ensues, and in the end Bo-Bo is shot by rolf.