“When a daughter witness a murder, the father from the top of the Hells Angels must protect her until the trial.”

Is your protagonist the daughter or the President of the Hell's Angels? (He's the only one with a compelling action in your current logline). Who must he protect his daughter from? How about indicating some character flaws?

I think Richiev's suggestion is on the right track. Each logline element should contribute to the dramatic tension of the story. A father needing to protect his daughter -- there's no inherent conflict, no dramatic tension in that act. What father wouldn't try to protect his daughter -- even a Hell's Angel father?

There is dramatic tension in protecting his daughter only if it brings the father into conflict with some other relationship or loyalty or urgent need. As well as puts his own life in mortal danger: trying to save his daughter may get him killed.

I think Richiev's suggestion is on the right track. Each logline element should contribute to the dramatic tension of the story. A father needing to protect his daughter -- there's no inherent conflict, no dramatic tension in that act. What father wouldn't try to protect his daughter -- even a Hell's Angel father?

There is dramatic tension in protecting his daughter only if it brings the father into conflict with some other relationship or loyalty or urgent need. As well as puts his own life in mortal danger: trying to save his daughter may get him killed.