Jealous of the attention Tammy gets for saving the life of a choking stranger, Mark buys a Jaws of Life to efficiently save lives; Tammy's life is threatened when she rejects the advances of Paul, the stranger she saved.

Mark, trying to prove to Tammy that he can get babies to like him, writes a hit song that becomes the next Baby Shark. He enlists his family and neighbors to join his management team, putting these relationships to the test during his meteoric rise and humiliating fall. Meanwhile, David tries to capitalize in Mark's wake by resuscitating his old and out of touch climate change educational magic act.

Mark accidentally murders Hank with a crossbow while hunting a deer.