Set ten years after the finale's quintuple wedding, the special portrays the happily reunited San Román family, including four new grandchildren, as well as the Xochimilco residents. The San Románs go to Patricia's lake cabin in order to celebrate their shared ten-year wedding anniversary, unaware that Demetrio, whom they believe died after escaping from prison a year prior, is actually alive and well and is conspiring with his grandson, Ángel and Alma's young son Angelito, and the San Román grandchildren's nanny, Diana, to kill the entire family.
Lalo, a humble mechanic with a great singing voice is discovered by the most famous pop group and launched to stardom, but he will be dazzled by fame and money, even forgetting his loved ones.
A professor suspects that a vicious killer may have discovered a way to return from the grave and continue his violent spree. His fears are proved true when a group of teenagers decide to pull a Halloween prank by stealing the killer's body from the morgue. When the teens recite an incantation from an old magic book over the corpse, it begins to come back to life, along with all of the bodies from the nearby cemetery.
