Oliver uses his burgeoning medical skills at school when he performs CPR on a popular girl's poodle, which quickly elevates his social status much to Kaz's chagrin. When the popularity goes to his head, Kaz cuts Oliver down to size, literally, with a shrinking ray. Meanwhile, Horace cannot perform surgery on Citadel, an ailing superhero with an impenetrable metal exoskeleton, so shrunken Oliver is sent inside the hero's body to diagnose the problem.

Alan is put in charge of the hospital for a day, but he abuses his power and makes life miserable for everyone.

Kaz and Oliver know that Skylar is evil, but Skylar doesn't know they suspect anything. They need to keep it that way or she may turn on them as well. They brace themselves until Skylar asks Oliver to the school dance that night.

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When superhero Spark, a tough-as-nails teenage girl, meets Kaz at Mighty Med, they have an immediate connection. However, it fizzles quickly when she becomes overly possessive. Meanwhile, Horace puts Skylar in charge of security to keep villains out of Mighty Med.

Oliver grapples with an internal conflict as he walks his mother down the aisle. Meanwhile, Kaz and Skylar struggle to protect the Arcturion from all the villains it beckons.

Kaz and Skylar search for the all-powerful Arcturion; Oliver recruits an unlikely candidate to protect him from Mr. Terror.

Oliver must care for a sack of highly valuable eggs when a pregnant female superhero is wheeled into the ER. Kaz helps Oliver hide his "pregnant" state at school.

Oliver is in charge of rehabilitating Wallace and Clyde since he believes they still have good left in them. Meanwhile, Kaz tries to give himself super powers with Skylar's help.

When Horace complains that comic book sales are down, Oliver and Kaz join the writing staff to help spice up the books. However, the boys' altered versions of the stories cause problems in the superhero community.

In an attempt to recruit new superheroes, Kaz holds superhero tryouts. Meanwhile, Oliver takes Skylar to a dance tournament to try to cheer her up when she's not allowed to compete in the superhero tryouts.

The Key Keeper announces his retirement, and Skylar and Kaz both express interest in becoming his replacement. Meanwhile, Oliver meets his mother's new boyfriend for the first time.

When Oliver's dad starts to wonder where he's going after school, Oliver says he's doing a play about Frankenstein.

Oliver enlists a mind-altering superhero named Neocortex to help him become more carefree and spontaneous like Kaz. When the brainwashed Oliver is too reckless during a crisis, Kaz is forced to step up and be the responsible one.

Oliver, Skylar, Alan and Gus leave Mighty Med to work on a school project together, and Kaz is left alone at Mighty Med while a rare and dangerous alien bug is on the loose.

Oliver accidentally steps into the line of fire of a superhero's beam during a routine test, which reverts him back to being 4 years old. While Kaz tries to fix Oliver, Alan develops an undesirable and embarrassing power.

When a freak accident suddenly gives edgy rock star Jade super powers, Oliver and Kaz take her under their wings and introduce her to the world of Mighty Med.  Debby Ryan guest stars.

Oliver and Skylar pet sit Horace's shark that is kept in the aquatic wing of the hospital. When Oliver feeds the shark the wrong food, the shark evolves into a man-shark.

Kaz and Oliver find themselves ambushed by the Annihilator and Skylar Storm on Caldera. With the help of Hapax the Elder, the boys must find a way to take down the supervillains and save the world.

Kaz and Oliver are exhausted and stuck working the overnight shift during a lunar eclipse, when it is rumored that the freakiest patients come to the hospital. When Neocortex checks in with an illness that unintentionally traps people in their worst nightmares, Kaz and Oliver desperately try to stay awake and figure out how to save everyone from their nightmares.

Kaz and Oliver suspect that there could be a hospital mole that is working with the Annihilator.

Two best friends discover a doorway leading to the hospital for super heroes.

Kaz and Oliver revive a frozen-in-time superhero from the 1950s named Captain Atomic. After Captain Atomic is wounded during a battle with a contemporary villain, the boys must travel back in time to save him.

Tension is high at Logan high, and Kaz becomes suspicious that his substitute teacher is actually Dr. Wrath in disguise, a supervillain who feeds on negative energy. While Kaz is determined to get to the bottom of it, Oliver helps Alan get over his aversion to normo food.

Wallace uses an optical image replicator to turn Clyde into an identical look-alike of Kaz in hopes that the disguised Clyde will trick Oliver into revealing the secret location of Mighty Med.