Livin’ on a Prayer is episode 12 of family guy season 10. It was originally aired on January 29, 2012.

When Stewie’s new best friend falls ill, Lois takes him to the hospital where she finds out he has a critical, but treatable, disease. However, the boy’s parents refuse treatment due to their religious beliefs, leaving Lois no choice but to take drastic measures to seek treatment for the boy herself.