The Justice League has to stop Poison Ivy, who has taken control of Swamp Thing and is working with Harley Quinn in order to take over Gotham City with Swamp Thing as her husband.
This episode provides examples of the following tropes:
- Affectionate Nickname: Poison Ivy calls Swamp Thing "schmoopy". He doesn't appreciate it, at least when he's not under Ivy's control.Poison Ivy: [after getting drenched with the antidote] Destroy them, schmoopy!
Swamp Thing: I'm not your schmoopy! - Apologetic Attacker:
- Blowing a Raspberry: Harley Quinn blows one at Vixen while she's being taken away by cops.
- Brainwashed and Crazy: Swamp Thing is mind-controlled by Poison Ivy and forced to attack his friends.
- Brought Down to Normal: Batman's antidote neutralizes Poison Ivy's powers when she's drenched with it.
- Creepy Monotone: Swamp Thing talks in an unnatural-sounding monotone whenever Poison Ivy takes control of him.
- Do Not Adjust Your Set: Poison Ivy sends a TV broadcast to the whole of Gotham City, announcing her plan to take it over.
- Funny Background Event: Poison Ivy is happily planning the details of her wedding... while Swamp Thing and Superman duke it out in the background.
- I Surrender, Suckers: Poison Ivy appears to surrender to Superman when he comes to confront her... only for a brainwashed Swamp Thing to show up in time to attack him.
- Villainesses Want Heroes: Poison Ivy plans to marry Swamp Thing.
