The time traveling League team goes to the future to team up with that time's League to battle Chronos who rules.
Did You Know?
The monuments stolen by Chronos seen during the episode are: Jupiter of Smyrna, The Trojan Horse, Two Moai Statues, The Leaning Tower of Pisa, The Titanic, The Parthenon, and The Great Sphinx. See more
"Old Bruce" has black eyes in this episode, which is inconsistent with the Batman Beyond series and later on "Epilogue" where he is depicted as having blue eyes (though present day Bruce has blue eyes so it may have been a mix up). See more
Time is money. Actually, time is the non-spacial continuum in which all events occur linearly, usually in the direction of increased entropy. But the clowns seemed to relate better to the money thing.
References The Matrix