1998 Mustang Starter Problems

My engine hydro locked about a week ago, but we were able to purge the water and it now RUNS fine. However, when you try to start it now it just clicks and all electronics go off. I’ve hooked up my Aspen’s battery and that let’s it try to start, but now its making this sound here: https://drive.google.com/file/d/19Y6xD9uXVtjcpXyRa_fTq0Uei0K0z7Z6/view?usp=drivesdk

I think its skipping gears but even so it still gets the engine above 1000 rpms and wont start even with gas applied. Any ideas?