This idea just came to me as I was reading Septimus Heap series and I hope you'll like it.
Disclaimer: I don't own Septimus Heap series or characters but this fanfic and idea is mine. Chapter 1:

It was Beetle's birthday and Jenna had thrown him a surprise part at palace, actually a ball. They have told Beetle that something horrible had happened in palace and he should be there at 9 o'clock. Beetle closed Manuscriptorium and ran to the palace wondering why Septimus insisted that he must finish his work first. Beetle reached the castle and saw that all the lights are out. He opened the doors and took a step as he closed the door behind him, all the lights came back and he saw a huge amount of people in ball gowns

"Happy Birthday." Everyone said together with a big cheer.

Beetle was speechless as he opened his mouth, someone hugged him very tight

"Happy birthday Beetle. Do you like it?" Said Jenna with a laugh and stepped back.

Beetle tried to thank her but she and Septimus took his hand and led him to the ball room, where everyone were dancing. Jenna noticed her mom struggling to bring the cake so she went to help her.

"Wotcha Beet. Jen told me about the party that's why I told you that there was trouble in the palace anyhow happy b-day." Said Septimus

Beetle laughed "Thank you. I can't believe my eyes." Beetle gazed at Jenna who was wearing long white dress and a small Adam's Needle flower in her hair

Beetle asked Jenna to dance and she happily accepted. As they were dancing Tango, Jenna heard a voice

"What's that?"

Beetle had also heard it "It's coming from outside." They both went outside, following the voice and then they saw it on the stairs

"Oh my gosh. It's a baby." Said Jenna.

That's it for chapter one. I know this chapter was too short but whoever has read my other fanfic knows that I can't write small chapters. I promise to update this week and promise that it'll be more than 1,000 words. Don't forget to review.