Tony Garcia, leader of non-violent protest against the use of allegedly cancerogenous fungicides at the Kasabian vineyards, dies in suspicious circumstances. MacGyver investigates for the Phoenix foundation. he must try to control the hothead protest champion Hector Lopez while investigating the main suspects, moderate owner Kasabian and his son and foreman, whose open hostility gets out of hand after Mac, infiltrated as picker, gathered evidence in the field.
—KGF Vissers