Synopsis: Abyss of Matter

Two MCs start in College (make up a name). In college, Junior year they go for a night *forbidden* walk through campus and peek in to a teacher conference. This is a top college and the teachers are actual famous scientists, writers, etc. Everyone is huddled around something and the pair can only hear words like "time" "disaster" "doom" When one MC goes closer and trips and the other goes after he/she they fall into a black hole which takes them through time and space to the following spaces and times:

Atoms in side of Einstein (find time)
People during conquistadors (year)
People on Pluto
Planets in *name* galaxy
Tiny life forms on People (2008)
Words in Nanowrimo
Ducks in a pond

At the end, one MC dies and the other comes back within one split second to his own time without the other. Over the next month he/she cannot live without he/she. Fifty years later, he/she finds scalpel that was used by staff at college to open black hole to open another one and reverses the effects and what happened. In the end, because of hurrying and carelessness, all times and spaces collide and the fate of the universe lies on one : A mysterious masked figure (neither of MC's) who is "the keeper of the universe"Now there are four sides battling against one another, the chaos, the peace, the time cutters, and the mysterious masked figure. Only one group will give him back the other MC and that group is the right one to choose. Which group is it? Will he choose Correctly