《救援狗第4集》剧情讲述了Tracy and his rescue dog Charger have to foil the plans of an Evil Businessman who wants to knock over their beach restaurant in order to build his golf course. With help from his brother, Tracy tries to meet the bills, manage the kitchen (where Charger helps cook!) and still find time to fall in love with the beautiful dancer, Bridget. Through a comedy of errors and mishaps, the humans find they themselves can be rescued by their very own rescue animals.
星辰云