A possible concise summary is:
A group of friends prank AAL by making her wear a ring that summons a demon named Aaron, who falls in love with her and builds her a new house. Ian, another friend, tries to ruin their relationship by kidnapping Aaron and proposing to AAL with a cheese ring, but fails. Casey, who helped with the prank, gets upset that AAL doesn't want to get married right away and turns into a giant monster. AAL and Aaron calm her down and attend the wedding of their pets, a dog and a cat.
Here are some key facts extracted from the text:
1. Kissy and AAL planned a prank wedding for AAL and Aaron, a demon.
2. Zane and Ian created a two-headed iron golem to save AAL from the tower, but it went out of control and destroyed everything.
3. Aaron saved AAL from the golem and took him to his new house, which he built with his powers.
4. Ian tried to sabotage their engagement by kidnapping Aaron and proposing to AAL with a cheese ring.
5. Casey became a giant dragon and attacked Ian after AAL said he didn't want to get married yet.
6. Aaron calmed Casey down by promising her a wedding, which turned out to be for their pets, Wolfel and Meowza.