Symbiotic Bonding

Phineas and Ferb build their own version of the Delorean from Back to the Future and travels into the future, where everything's not evil. Danny and Candace finally accept their relationship, and they find out that Jeremy's married to Stacy, and that Danny and Candace are married to each other. They meet future Candace and Danny, and their kids, identical daughters, Cathy, Diane, Diana, and their little brother, Darry Fenton. And in Future Danny's lab, Danny finds the alien symbiote stuck in a frozen chamber. Then, Candace accidentally releases the alien symbiote, bonding with Eddie Brock, becoming Venom! And things get worse when Venom forms the Sinister 16! Now it's up to Adult Danny Phantom, Adult Candace Flynn, the Fenton siblings, the teenagers and the boys to defeat the Sinister 16, and to remove the symbiote from Eddie Brock