Marinette is now 16. She has moved on from Adrien. Luka asked Mari out and she happily accepts. Adrien, meanwhile, is starting to find feelings for Mari buried deep inside of him. Will Adrien win Marinette back? Will she stay with Luka? No one knows.
Warning: Mild Cursing
And yes, I am aware of how cringy this trope is, but I love it.