HELP!! External not detected!!

I have an external drive i use for TM and misc storage. today, one of my idiotic family members pulled the USB cord out of my MBP without unmounting it first. when i plugged it back in i got an alert saying i shouldn't have done that, and then a TM warning saying a backup failed.

now, when i go to finder, the drive is not there. i restarted my macbook, still not being detected. what can i do??? please help me...

btw, after this family member joked about doing it on purpose, i decided to pull a little prank and steal the power cable to their laptop.... sucker. (yeah, its not a happy household.)

please help me so i can get my drive back and let the family healing begin.