An adventure leading to some advanced medical experimentation to save a rider's life.

Jack is still struggling with his feelings toward Sue and he knows that competition could easily come up. How will he cope with an even more challenging setting? Will he keep his cool or stirring still waters will prompt unexpected reactions?

Lou has to face the aftermath of Charlotte's death. Are her troubles over or she is just in for further occurrences? Family sticks together, but are all brothers and sister?