'Slick Sid 11' follows the progress of Sid Romano after his retirement from the world of bodybuilders. Now firmly settled in their new home he turns his attention to other pursuits with familiar results. Max, now married to the Romano's housekeeper, takes on the role of protector, rather than aggressor. Rescueing Sid from a series of mishaps and enlisting help from old friends in dealing with Mr Silva's henchmen. In particular the mad brothers, Hal and Ally. Just as Sid junior, the eldest of the Romano children, shows surprising maturity. Joseph however displays all the traits of his father, before his entry into the bodybuilding curcuit. Sid senior remains his usual aimable self and oblivious to the chaos he leaves behind him. Mr Silva, now fleeing from the IRS joins the mad brother in Boston. But, things do not go well. Just as Sid has a tendancy to failure, his wife Angelica, on the other hand, sees her business grow. She is now ready to amalgamate with a number of other companies and enter into the global market. With Sid junior by her side the new company is born and plans for a celebratory party made. With the party in full swing Sid senior hears a womans voice which takes him back in time to San Diego. The penny dropped for Sid but not for Max. The womans walk is familia, but where does he know her from?