Bio-Broly is basically another example of how a third movie in a certain movie trilogy can be a massive fail. The plot is Mr. Satan, Android 18, Goten, and Trunks are invited to a semi-tournament against a friend of Mr. Satan's who threatens to expose the Word Martial Arts Tournament champion as a fraud, but the shaman from the second Broly movie has helped him make a Bio-Human clone of Broly, and when he breaks out of his capsule, carnage is all but ensured.
My main beef is Broly himself. While it was good he came back, he is only in his iconic form for a few seconds until he fuses himself with some dangerous fluid that deforms him into Bio-Broly, which reduces the villain to a mindless zombie. And Mr. Satan is more of a big baby in this while Goten and Trunks take center stage, the only good thing being they show they can fight without the aid of their fathers. The plot is uninteresting and feels more like a cheaply-made cash grab over the Broly character. Thank goodness the Broly movie for Dragon Ball Super gave us a canon Broly that is better than the bio-engineered abomination this one cooks up.
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