When Cat breaks up with Owen, Lola decides to be supportive and break up with her own boyfriend, Glenn, by telling him that she has brain cancer.

Things get tense after Cat sneezed on Lola. Meanwhile, Briggs tries to get Glen back on the police force.

The Chief calls a staff meeting to discuss Lola's nonexistent brain tumor.

The Chief tries to help a boy who has aged rapidly. Meanwhile, Blake tries to help people via the healing power of laughter.

Another doctor tries to use Blake's method: the healing power of laughter.

In this very special episode, things are told from the perspective of a visiting doctor from Puerto Rico.

Glen gets upset about Cat's new boyfriend. Meanwhile, a new doctor may be able to cure The Chief.

Blake challenges Nate to a competition where the two doctors must perform surgery using only the healing power of laughter.

In the season finale Max performs surgery on The Chief and Blake tries to cure Lola's nonexistent tumor.