Having restarted time, Rick, Morty and Summer are in a quantum-uncertain state of existence. An argument leads to the creation of two alternate timelines, which need to be stitched back together fast if they are to escape quantum collapse.
In continuation from (Ricksy Business (2014)), Beth and Jerry are unfrozen, and now, Rick, Morty and Summer are in a quantum-uncertain state of existence. Morty and Summer have an argument, which leads to the creation of 2 alternate time-lines, which must be re-connected if fhey're to escape.—Jan