Janet does not realize that the Irish hypochondriac who's come to see her at the health centre is actually the famed superhero Thermoman, who saved her life while she was vacationing in Arizona.

As George and Janet are now an item, things move on for them and it's time to meet Janet's parents. But Janet's mother knows what she wants for her daughter - smooth, oily Dr. Piers, not weird George. Janet is a bag of nerves and even more so that George says and does the oddest things, sometimes at the worst moment imaginable.

Thermoman faces his biggest challenge yet. After Janet washes his superhero outfit in biological detergent which make him itch, an book from his home planet says that he mustn't have sex more than once a month. But worst of all, Piers knows George's secret.

Thermoman's father comes to visit and starts interfering with his son's love life.

George decides to throw a surprise 30th-birthday party for Janet.