Watch Mamma Mia! Here We Go Again (2018) HD Full Movie Free on SolarMovie. Watch Mamma Mia! Here We Go Again (2018) online free. Five years after the events of Mamma Mia! (2008), Sophie prepares for the grand reopening of the Hot...Five years after the events of Mamma Mia! (2008), Sophie prepares for the grand reopening of the Hotel Bella Donna as she learns more about her mother's past.