Parents need to know that "Mamma Mia! Here We Go Again" is the sequel to 2008's hugely popular romantic musical Mamma Mia!, featuring more earworm-worthy ABBA songs. This time, Sophie (Amanda Seyfried), who's mourning the unexpected death of her mother, Donna (Meryl Streep), re-opens a Greek hotel in her mom's honor. The movie also flashes back to a young Donna (Lily James) meeting the three men who become Sophie's potential fathers. Like the original, the sequel is frothy fun, with some innuendo and sexual activity (fans already know Donna had three sexual encounters in the same month). But it's mostly limited to kissing, dancing, and flirting. Characters drink in pubs, restaurants, and at parties, sometimes acting drunk. Language is infrequent but includes "son of a bitch," "crap," and "Jesus Christ" (as an exclamation). The movie values strong friendships, open communication, and following your dreams; themes also include empathy and gratitude.