Watch Lassie: A New Adventure (2023) HD Full Movie Free on solarmovie.do. Watch Lassie: A New Adventure (2023) online free. Collie dog protagonist Lassie investigate the mysterious disappearances of several pedigree dogs, wi...Collie dog protagonist Lassie investigate the mysterious disappearances of several pedigree dogs, with the help of best friend Flo and new companions Henri, Kleo and little Pippa, a Jack Russell Terrier.