Roped into spending Halloween in an abandoned hospital by her friends, Jessie Holden (Trish Coren) finds herself at the mercy of her prank-loving boyfriend Kevin (Jilon Ghai) who's planned a few surprises. What none of them realise, however, is that the creepy hospital has some scares of its own in store for its captive guests. BOO! provides the schlock horror fare with gusto in this genuinely creepy directorial debut from Anthony C. Ferrante.