The Avengers, The Defenders, The Justice League, The Wonderful 101, the Big Hero 6, are all busy fighting off Galactus. All of a sudden Thanos appears in the pridelands equipped with a complete Infinity Guantlet.
The only team left that can fight Thanos is The Lion Guard.
As an added bonus, Deadpool is now a part of The Lion Guard. Mostly because he was paid a lot of money (and the complete golden girls series on blu ray) by Lord Mickey.
Who could possibly win this incredibly lopsided fight?!?!?!?!?!?