Holly, blessed with an amazing singing voice, is all set to audition for the newly vacated spot in a legendary local Christmas group which was founded by her late mother years ago. Shocked and upset when the slot goes to the barely talented best friend of the group's leader, Marci, Holly sets out to create her own musical group, The Mistle-Tones. After challenging their rivals to a sing-off on Christmas Eve, Holly finds herself on a journey to the real meaning of Christmas with some new friends and a new love thrown in for good measure.

A boy named Harley and his family attend a taping of The Banana Splits TV show, which is supposed to be a fun-filled birthday for young Harley and business as usual for Rebecca, the producer of the series. But things take an unexpected turn - and the body count quickly rises. Can Harley, his mom and their new pals safely escape?