Happy Death Day 2U is a surprising movie. Not just because it’s good, but because it isn’t even the same genre as the first one. Happy Death Day was a fresh take on familiar tropes, namely time loops and slasher horror, and managed to be both irreverent and charming. This one keeps those elements but dodges the more obvious, and probably expected, move of anteing up on the scares. Instead, it zooms in on the implications of time loops and somehow winds up becoming a respectable science fiction movie in the process.