A greenhouse is already really good when it comes to a plant's livelihood. But add the sun into that equation and you have something really great for the plants. Their livelihood will be awesome, now!
From out of nowhere, Bobo (ぼ) the notorious clown thief starts picking the plants, ending their livelihood. Bobo needs the flowers for his clown acts, so he uses the livelihood of the flowers to support his own livelihood.