Never Board A Green Bus... (Flight Knights, Book 3)

RIDE AT YOUR OWN RISK…
Hanna Stevens just received an EMERGENCY ALIEN ALERT during school.
But school’s almost out. So, Hanna can activate her Flight Knight suit and track down the aliens.
There’s just one problem.
Bullies are teasing her new friend, Iris—calling her Iris-The-Virus. And that’s not all.
Hanna discovers Iris has a BIGGER problem.
BUS NUMBER 51.
Iris doesn't want to ride it home alone, so Hanna decides to ride along.
The Aliens will have to wait.
Too bad Hanna doesn't know what she’s getting herself into.
After all, how long has she known Iris?
Did Hanna make the right choice?
Maybe the Aliens are already waiting…
for her…